zoukankan      html  css  js  c++  java
  • C# 数据操作工具类

    CREATE PROCEDURE [dbo].[RecordFromPage] 
     @SelectList            VARCHAR(max),   
     @TableSource        VARCHAR(100),   
     @SearchCondition    VARCHAR(max),   
     @OrderExpression    VARCHAR(1000),   
     @PageIndex            INT = 1,      
     @PageSize            INT = 10,   
     @TotalCount int output
    AS 
    BEGIN
        IF @SelectList IS NULL OR LTRIM(RTRIM(@SelectList)) = ''
        BEGIN
            SET @SelectList = '*'
        END
        PRINT @SelectList
        
        SET @SearchCondition = ISNULL(@SearchCondition,'')
        SET @SearchCondition = LTRIM(RTRIM(@SearchCondition))
        IF @SearchCondition <> ''
        BEGIN
            IF UPPER(SUBSTRING(@SearchCondition,1,5)) <> 'WHERE'
            BEGIN
                SET @SearchCondition = 'WHERE ' + @SearchCondition
            END
        END
        PRINT @SearchCondition
    
        SET @OrderExpression = ISNULL(@OrderExpression,'')
        SET @OrderExpression = LTRIM(RTRIM(@OrderExpression))
        IF @OrderExpression <> ''
        BEGIN
            IF UPPER(SUBSTRING(@OrderExpression,1,5)) <> 'WHERE'
            BEGIN
                SET @OrderExpression = 'ORDER BY ' + @OrderExpression
            END
        END
        PRINT @OrderExpression
    
        IF @PageIndex IS NULL OR @PageIndex < 1
        BEGIN
            SET @PageIndex = 1
        END
        PRINT @PageIndex
        IF @PageSize IS NULL OR @PageSize < 1
        BEGIN
            SET @PageSize = 10
        END
        PRINT  @PageSize
    	
    	DECLARE @Total int 
    		DECLARE @Sql nVarchar(max)
    		SET @Sql=(N'SELECT @Total=Count(*) FROM ' + @TableSource +' '+ @SearchCondition)
    		print @sql
    		Exec sp_executesql @Sql, N'@Total Int Out',@Total Out 
    	set @TotalCount=@Total
        DECLARE @SqlQuery VARCHAR(max)
    
        SET @SqlQuery='SELECT '+@SelectList+',RowNumber 
        FROM 
            (SELECT ' + @SelectList + ',ROW_NUMBER() OVER( '+ @OrderExpression +') AS RowNumber 
              FROM '+@TableSource+' '+ @SearchCondition +') AS RowNumberTableSource 
        WHERE RowNumber BETWEEN ' + CAST(((@PageIndex - 1)* @PageSize+1) AS VARCHAR) 
        + ' AND ' + 
        CAST((@PageIndex * @PageSize) AS VARCHAR)
    --    ORDER BY ' + @OrderExpression
        PRINT @SqlQuery
        SET NOCOUNT ON
        EXECUTE(@SqlQuery)
        SET NOCOUNT OFF
     
    END
    

      

    /// <summary>
    /// 查询接口
     /// </summary>
    public interface IQuery
    {
            string Column { get; set; }                                 //列名
            string TableName { get; set; }                              //表名
            string OrderBy { get; set; }                                //查询的"OrderBy"语句,不包含OrderBy,例子:ID DESC
            string BulidQuery();                                        //查询的"where"语句
            string BulidSelect(string where, string tableName = "");     //查语句
    }


    /// <summary>
        /// 分页实现简单查询
        /// </summary>
        public class CommonPageSql
        {
    
    
            /// <summary>
            /// 分页获取数据列表 适用于SQL2005和SQL2008
            /// </summary>
            /// <param name="con">数据库连接字符串</param>
            /// <param name="pageindex">页索引 从0开始</param>
            /// <param name="pagesize">每页记录数</param>
            /// <param name="query">查询接口</param>
            /// <param name="p">输出参数</param>
            /// <returns>DataRead数据集</returns>
            public static IDataReader GetDataReaderByPager(string con, int pageindex, int pagesize, IQuery query, out SqlParameter p)
            {
                string cmd = "RecordFromPage";
                SqlParameter[] para = SqlHelperParameterCache.GetSpParameterSet(con, cmd);
                para[0].Value = query.Column;
                para[1].Value = query.TableName;
                para[2].Value = query.BulidQuery();
                para[3].Value = query.OrderBy;
                para[4].Value = pageindex;
                para[5].Value = pagesize;
                para[6].Direction = ParameterDirection.Output;
                //SqlParameter[] para = new SqlParameter[7];
                //para[0] = new SqlParameter("@SelectList", query.Column);
                //para[1] = new SqlParameter("@TableSource", query.TableName);
                //para[2] = new SqlParameter("@SearchCondition", query.BulidQuery());
                //para[3] = new SqlParameter("@OrderExpression", query.OrderBy);
                //para[4] = new SqlParameter("@pageindex", pageindex);
                //para[5] = new SqlParameter("@pagesize", pagesize);
                //para[6] = new SqlParameter("@TotalCount", SqlDbType.Int);
                //para[6].Direction = ParameterDirection.Output;
                IDataReader reader = SqlHelper.ExecuteReader(con, CommandType.StoredProcedure, cmd, para);
                p = para[6];
                return reader;
            }
    
            /// <summary>
            /// 分页获取数据列表 适用于SQL2005和SQL2008
            /// </summary>
            /// <param name="con">数据库连接字符串</param>
            /// <param name="pageindex">页索引 从0开始</param>
            /// <param name="pagesize">每页记录数</param>
            /// <param name="query">查询接口</param>
            /// <param name="p">输出参数</param>
            /// <returns>DataTable数据集</returns>
            public static DataTable GetDataByPager(string con, int pageindex, int pagesize, IQuery query, out SqlParameter p)
            {
                string cmd = "RecordFromPage";
                SqlParameter[] para = SqlHelperParameterCache.GetSpParameterSet(con, cmd);
                para[0].Value = query.Column;
                para[1].Value = query.TableName;
                para[2].Value = query.BulidQuery();
                para[3].Value = query.OrderBy;
                para[4].Value = pageindex;
                para[5].Value = pagesize;
                para[6].Direction = ParameterDirection.Output;
                DataTable datatable = SqlHelper.ExecuteDataset(con,CommandType.StoredProcedure,cmd,para).Tables[0];
                p = para[6];
                return datatable;
            }
        }
    /// <summary>
        /// 简单查询帮助类
        /// </summary>
        public class CommonSelectSql
        {
            #region DataReader
            /// <summary>
            /// 获取数据
            /// </summary>
            /// <param name="con">数据库连接字符串</param>
            /// <param name="top">前几条</param>
            /// <param name="Query">查询构建类</param>
            /// <returns>DataReader数据表</returns>
            public static IDataReader SelectGetReader(string con,int top,IQuery Query)
            {
                return GetDataReader(con,top, Query.TableName, Query.Column, Query.BulidQuery(), Query.OrderBy);
            }
    
            /// <summary>
            /// 获得前几行数据
            /// </summary>
            /// <param name="connstring">数据库连接字符串</param>
            /// <param name="Top">几条记录</param>
            /// <param name="tableName">表名</param>
            /// <param name="Column">列名</param>
            /// <param name="strWhere">查询条件</param>
            /// <param name="filedOrder">排序方式</param>
            /// <returns>DataReader数据表</returns>
            private static IDataReader GetDataReader(string connstring,int Top, string tableName, string Column, string strWhere, string filedOrder)
            {
                StringBuilder strSql = new StringBuilder();
                strSql.AppendFormat("SELECT * FROM(SELECT ROW_NUMBER() OVER(ORDER BY {0}) ROWNUM,", filedOrder);
                if (!string.IsNullOrEmpty(Column))
                {
                    strSql.Append(Column);
                }
                else
                {
                    strSql.Append("*");
                }
                strSql.Append(" FROM " + tableName);
                if (strWhere.Trim() != "")
                {
                    strSql.Append(" where " + strWhere + ") T");
                }
                else
                {
                    strSql.Append(") T");
                }
                if (Top > 0)
                {
                    strSql.AppendFormat(" WHERE T.ROWNUM <= {0}",Top);
                }
                return SqlHelper.ExecuteReader(connstring, CommandType.Text, strSql.ToString());
            }
            #endregion
    
            #region DataTable
    
            /// <summary>
            /// 获取数据
            /// </summary>
            /// <param name="con">数据库连接字符串</param>
            /// <param name="top">前几条</param>
            /// <param name="Query">查询构建类</param>
            /// <returns>DataTable数据表</returns>
            public static DataTable SelectGetTable(string con, int top, IQuery Query)
            {
                return GetDataTable(con, top, Query.TableName, Query.Column, Query.BulidQuery(), Query.OrderBy);
            }
    
            /// <summary>
            /// 获得前几行数据
            /// </summary>
            /// <param name="con">数据库连接字符串</param>
            /// <param name="Top">几条记录</param>
            /// <param name="tableName">表名</param>
            /// <param name="Column">列名</param>
            /// <param name="strWhere">查询条件</param>
            /// <param name="filedOrder">排序方式</param>
            /// <returns>DataTable数据表</returns>
            private static DataTable GetDataTable(string con,int Top, string tableName, string Column, string strWhere, string filedOrder)
            {
                StringBuilder strSql = new StringBuilder();
                strSql.Append("select ");
                if (Top > 0)
                {
                    strSql.Append(" top " + Top.ToString());
                }
                strSql.Append(Column);
                strSql.Append(" FROM " + tableName);
                if (strWhere.Trim() != "")
                {
                    strSql.Append(" where " + strWhere);
                }
                strSql.Append(" order by " + filedOrder);
                return SqlHelper.ExecuteDataset(con,CommandType.Text,strSql.ToString()).Tables[0];
            }
            #endregion
        }
    /// <summary>
        /// 用来缓存SqlParameter
        /// </summary>
        public sealed class SqlHelperParameterCache
        {
            #region 私有方法,变量,跟构造函数
    
            private SqlHelperParameterCache() { }
    
            private static Hashtable paramCache = Hashtable.Synchronized(new Hashtable());
    
            /// <summary>
            /// 返回存储过程中的参数信息
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="includeReturnValueParameter">是否返回需要返回的参数@RETURN_VALUE</param>
            /// <returns>返回的参数数组.</returns>
            private static SqlParameter[] DiscoverSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("存储过程名");
    
                SqlCommand cmd = new SqlCommand(spName, connection);
                cmd.CommandType = CommandType.StoredProcedure;
    
                connection.Open();
                SqlCommandBuilder.DeriveParameters(cmd);
                connection.Close();
    
                if (!includeReturnValueParameter)
                {
                    cmd.Parameters.RemoveAt(0);
                }
    
                SqlParameter[] discoveredParameters = new SqlParameter[cmd.Parameters.Count];
    
                cmd.Parameters.CopyTo(discoveredParameters, 0);
    
                foreach (SqlParameter discoveredParameter in discoveredParameters)
                {
                    discoveredParameter.Value = DBNull.Value;
                }
                return discoveredParameters;
            }
    
            /// <summary>
            /// 复制一份参数数组
            /// </summary>
            /// <param name="originalParameters">参数数组</param>
            /// <returns>参数数组</returns>
            private static SqlParameter[] CloneParameters(SqlParameter[] originalParameters)
            {
                SqlParameter[] clonedParameters = new SqlParameter[originalParameters.Length];
    
                for (int i = 0, j = originalParameters.Length; i < j; i++)
                {
                    clonedParameters[i] = (SqlParameter)((ICloneable)originalParameters[i]).Clone();
                }
    
                return clonedParameters;
            }
    
            #endregion
    
            #region 缓存方法
    
            /// <summary>
            /// 将参数数组添加到缓存
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            public static void CacheParameterSet(string connectionString, string commandText, params SqlParameter[] commandParameters)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
                if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");
    
                string hashKey = connectionString + ":" + commandText;
    
                paramCache[hashKey] = commandParameters;
            }
    
            /// <summary>
            /// 从缓存里获取参数数组
            /// </summary>
            /// <param name="connectionString">一个有效的数据库连接字符串</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>参数数组</returns>
            public static SqlParameter[] GetCachedParameterSet(string connectionString, string commandText)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("没有提供存储过程的名字或者 T-SQL 语句");
    
                string hashKey = connectionString + ":" + commandText;
    
                SqlParameter[] cachedParameters = paramCache[hashKey] as SqlParameter[];
                if (cachedParameters == null)
                {
                    return null;
                }
                else
                {
                    return CloneParameters(cachedParameters);
                }
            }
    
            #endregion caching functions
    
            #region 获取参数
    
            /// <summary>
            /// 通过存储过程名跟连接字符串获取缓存中的参数数组
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="spName">存储过程名</param>
            /// <returns>参数数组</returns>
            public static SqlParameter[] GetSpParameterSet(string connectionString, string spName)
            {
                return GetSpParameterSet(connectionString, spName, false);
            }
    
            /// <summary>
            /// 通过存储过程名跟连接字符串获取缓存中的参数数组
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="includeReturnValueParameter">是否返回输出参数</param>
            /// <returns>参数数组</returns>
            public static SqlParameter[] GetSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程名");
    
                using (SqlConnection connection = new SqlConnection(connectionString))
                {
                    return GetSpParameterSetInternal(connection, spName, includeReturnValueParameter);
                }
            }
    
            /// <summary>
            /// 通过数据库连接对象获取缓存中的参数数组
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="spName">存储过程名</param>
            /// <returns>参数数组</returns>
            internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName)
            {
                return GetSpParameterSet(connection, spName, false);
            }
    
            /// <summary>
            /// 通过数据库连接对象获取缓存中的参数数组
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="includeReturnValueParameter">是否返回输出参数</param>
            /// <returns>参数数组</returns>
            internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                using (SqlConnection clonedConnection = (SqlConnection)((ICloneable)connection).Clone())
                {
                    return GetSpParameterSetInternal(clonedConnection, spName, includeReturnValueParameter);
                }
            }
    
            /// <summary>
            /// 通过数据库连接对象获取缓存中的参数数组
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="includeReturnValueParameter">是否返回输出参数</param>
            /// <returns>参数数组</returns>
            private static SqlParameter[] GetSpParameterSetInternal(SqlConnection connection, string spName, bool includeReturnValueParameter)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程名");
    
                string hashKey = connection.ConnectionString + ":" + spName + (includeReturnValueParameter ? ":include ReturnValue Parameter" : "");
    
                SqlParameter[] cachedParameters;
    
                cachedParameters = paramCache[hashKey] as SqlParameter[];
                if (cachedParameters == null)
                {
                    SqlParameter[] spParameters = DiscoverSpParameterSet(connection, spName, includeReturnValueParameter);
                    paramCache[hashKey] = spParameters;
                    cachedParameters = spParameters;
                }
    
                return CloneParameters(cachedParameters);
            }
    
            #endregion
    
    
    
        }
    /// <summary>
        /// 封装数据库操作方法
        /// </summary>
        public abstract class SqlHelper
        {
            #region 私有方法以及构造方法
    
            //不允许建立实例
            private SqlHelper() { }
    
            //获取数据库连接
            public static SqlConnection GetSqlConnection(string con)
            {
    
                try
                {
                    return new SqlConnection(con);
                }
                catch
                {
                    throw new Exception("连接出错");
                }
    
            }
    
    
            /// <summary>
            /// 这个方法给SqlCommand添加参数
            /// </summary>
            /// <param name="command">需要添加参数的command</param>
            /// <param name="commandParameters">参数数组</param>
            private static void AttachParameters(SqlCommand command, SqlParameter[] commandParameters)
            {
                if (command == null) throw new ArgumentNullException("command");
                if (commandParameters != null)
                {
                    foreach (SqlParameter p in commandParameters)
                    {
                        if (p != null)
                        {
                            // 检查当为输入参数时赋予默认值
                            if ((p.Direction == ParameterDirection.InputOutput ||
                                p.Direction == ParameterDirection.Input) &&
                                (p.Value == null))
                            {
                                p.Value = DBNull.Value;
                            }
                            command.Parameters.Add(p);
                        }
                    }
                }
            }
    
            /// <summary>
            /// 这个方法使用的DataRow列的值填充SqlParameter数组
            /// </summary>
            /// <param name="commandParameters">需要填充到SqlParameter数组的DataRow</param>
            /// <param name="dataRow">需要用到的DataRow</param>
            private static void AssignParameterValues(SqlParameter[] commandParameters, DataRow dataRow)
            {
                if ((commandParameters == null) || (dataRow == null))
                {
                    return;
                }
    
                int i = 0;
                foreach (SqlParameter commandParameter in commandParameters)
                {
                    if (commandParameter.ParameterName == null ||
                        commandParameter.ParameterName.Length <= 1)
                        throw new Exception(
                            "没有给SqlParameter赋予ParameterName");
                    if (dataRow.Table.Columns.IndexOf(commandParameter.ParameterName.Substring(1)) != -1)
                        commandParameter.Value = dataRow[commandParameter.ParameterName.Substring(1)];
                    i++;
                }
            }
    
            /// <summary>
            /// 给SqlParameter数组赋值
            /// </summary>
            /// <param name="commandParameters">SqlParameter数组</param>
            /// <param name="parameterValues">参数值的数组</param>
            private static void AssignParameterValues(SqlParameter[] commandParameters, object[] parameterValues)
            {
                if ((commandParameters == null) || (parameterValues == null))
                {
                    return;
                }
    
    
                if (commandParameters.Length != parameterValues.Length)
                {
                    throw new ArgumentException("SqlParameter数组的长度跟参数值的数组的长度不匹配");
                }
    
                // Iterate through the SqlParameters, assigning the values from the corresponding position in the 
                // value array
                for (int i = 0, j = commandParameters.Length; i < j; i++)
                {
                    // 如果目前的数组值来自IDbDataParameter 则填充
                    if (parameterValues[i] is IDbDataParameter)
                    {
                        IDbDataParameter paramInstance = (IDbDataParameter)parameterValues[i];
                        if (paramInstance.Value == null)
                        {
                            commandParameters[i].Value = DBNull.Value;
                        }
                        else
                        {
                            commandParameters[i].Value = paramInstance.Value;
                        }
                    }
                    else if (parameterValues[i] == null)
                    {
                        commandParameters[i].Value = DBNull.Value;
                    }
                    else
                    {
                        commandParameters[i].Value = parameterValues[i];
                    }
                }
            }
    
            /// <summary>
            /// 为执行sql命令做准备
            /// </summary>
            /// <param name="command">sql指令</param>
            /// <param name="connection">数据库连接</param>
            /// <param name="transaction">数据库事务</param>
            /// <param name="commandType">指令类型</param>
            /// <param name="commandText">sql语句或存储过程</param>
            /// <param name="commandParameters">执行sql需要传入的参数</param>
            /// <param name="mustCloseConnection">如果sql连接还没有关闭着返回true</param>
            private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, out bool mustCloseConnection)
            {
                if (command == null) throw new ArgumentNullException("缺少SqlCommand参数");
                if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("缺少sql语句或存储过程语句");
    
                //当数据库没有连接则连接
                if (connection.State != ConnectionState.Open)
                {
                    mustCloseConnection = true;
                    connection.Open();
                }
                else
                {
                    mustCloseConnection = true;
                }
                command.Connection = connection;
                command.CommandText = commandText;
    
                if (transaction != null)
                {
                    if (transaction.Connection == null) throw new ArgumentException("请提供一个已经打开的事务", "transaction");
                    command.Transaction = transaction;
                }
                command.CommandType = commandType;
    
                if (commandParameters != null)
                {
                    AttachParameters(command, commandParameters);
                }
                return;
            }
    
            #endregion
    
            #region ExecuteNonQuery
    
            /// <summary>
            ///执行的SqlCommand (返回结果并没有任何参数)
            /// </summary>
            /// <param name="connectionString">一个有效的数据库连接字符串</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
            public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText)
            {
                return ExecuteNonQuery(connectionString, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            ///执行的SqlCommand (没有返回结果)
            /// </summary>
            /// <param name="connectionString">一个有效的数据库连接字符串</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
            public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                using (SqlConnection connection = new SqlConnection(connectionString))
                {
                    connection.Open();
                    return ExecuteNonQuery(connection, commandType, commandText, commandParameters);
                }
            }
    
            /// <summary>
            /// 执行存储过程通过的SqlCommand (没有返回结果)
            /// </summary>
            /// <param name="connectionString">一个有效的数据库连接字符串</param>
            /// <param name="spName">存储过程名称</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
            public static int ExecuteNonQuery(string connectionString, string spName, params object[] parameterValues)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程名");
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
                    AssignParameterValues(commandParameters, parameterValues);
                    return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行的SqlCommand (返回结果并没有任何参数)。 
            /// </summary>
            /// <param name="connection">SqlConnection连接</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
            public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText)
            {
                // Pass through the call providing null for the set of SqlParameters
                return ExecuteNonQuery(connection, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行的SqlCommand (返回结果并没有任何参数)
            /// </summary>
            /// <param name="connection">一个现有的数据库连接</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
            public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (connection == null) throw new ArgumentNullException("没有提供现有的数据库连接");
                SqlCommand cmd = new SqlCommand();
                bool mustCloseConnection = true;
                PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
                int retval = cmd.ExecuteNonQuery();
                cmd.Parameters.Clear();
                if (mustCloseConnection)
                    connection.Close();
                return retval;
            }
    
            /// <summary>
            ///执行存储过程通过的SqlCommand (没有返回结果)
            /// </summary>
            /// <param name="connection">一个现有的数据库连接</param>
            /// <param name="spName">存储过程名称</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
            public static int ExecuteNonQuery(SqlConnection connection, string spName, params object[] parameterValues)
            {
                if (connection == null) throw new ArgumentNullException("没有提供现有的数据库连接");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("存储过程的名字");
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
                    AssignParameterValues(commandParameters, parameterValues);
                    return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行的SqlCommand (没有返回结果并没有任何参数)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">事务</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>A返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
            public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText)
            {
                return ExecuteNonQuery(transaction, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行的SqlCommand (没有返回结果)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">事务</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
            public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (transaction == null) throw new ArgumentNullException("transaction");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("请为提供SqlTransaction提供连接", "transaction");
                SqlCommand cmd = new SqlCommand();
                bool mustCloseConnection = true;
                PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
                int retval = cmd.ExecuteNonQuery();
                cmd.Parameters.Clear();
                return retval;
            }
    
            /// <summary>
            /// 执行的SqlCommand (没有返回结果)对所提供的SqlTransaction 
            /// </summary>
            /// <param name="transaction">事务</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个数值表示此SqlCommand命令执行后影响的行数</returns>
            public static int ExecuteNonQuery(SqlTransaction transaction, string spName, params object[] parameterValues)
            {
                if (transaction == null) throw new ArgumentNullException("transaction");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("请为提供SqlTransaction提供连接", "transaction");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("请提供存储过程名");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
    
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
    
                    AssignParameterValues(commandParameters, parameterValues);
    
                    return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
                }
            }
    
            #endregion ExecuteNonQuery
    
            #region ExecuteDataset
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个结果,并没有任何参数)
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回结果集DataSet</returns>
            public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText)
            {
                return ExecuteDataset(connectionString, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个结果)
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回结果集DataSet</returns>
            public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString参数没有提供");
                using (SqlConnection connection = new SqlConnection(connectionString))
                {
                    connection.Open();
                    return ExecuteDataset(connection, commandType, commandText, commandParameters);
                }
            }
    
            /// <summary>
            /// 使用存储过程执行的SqlCommand (即返回一个结果).
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回结果集DataSet</returns>
            public static DataSet ExecuteDataset(string connectionString, string spName, params object[] parameterValues)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString参数没有提供");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程名");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
                    AssignParameterValues(commandParameters, parameterValues);
                    return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个结果,并没有任何参数)
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回结果集DataSet</returns>
            public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText)
            {
                return ExecuteDataset(connection, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个结果)
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回结果集DataSet</returns>
            public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (connection == null) throw new ArgumentNullException("没有提供SqlConnection对象");
    
                SqlCommand cmd = new SqlCommand();
                bool mustCloseConnection = true;
                cmd.CommandTimeout = connection.ConnectionTimeout;
                PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
    
                using (SqlDataAdapter da = new SqlDataAdapter(cmd))
                {
                    DataSet ds = new DataSet();
                    da.Fill(ds);
                    cmd.Parameters.Clear();
    
                    if (mustCloseConnection)
                        connection.Close();
                    return ds;
                }
            }
    
            /// <summary>
            /// 使用存储过程执行的SqlCommand (即返回一个结果).
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="spName">存储过程的名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回结果集DataSet</returns>
            public static DataSet ExecuteDataset(SqlConnection connection, string spName, params object[] parameterValues)
            {
                if (connection == null) throw new ArgumentNullException("没有提供SqlConnection对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程名");
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
                    AssignParameterValues(commandParameters, parameterValues);
                    return ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteDataset(connection, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个结果,没有任何参数)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">事务</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回结果集DataSet</returns>
            public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText)
            {
                return ExecuteDataset(transaction, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个结果)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">事务</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回结果集DataSet</returns>
            public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供transaction");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供一个打开的transaction.", "transaction");
    
                SqlCommand cmd = new SqlCommand();
                bool mustCloseConnection = true;
                PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
    
                using (SqlDataAdapter da = new SqlDataAdapter(cmd))
                {
                    DataSet ds = new DataSet();
                    da.Fill(ds);
                    cmd.Parameters.Clear();
                    return ds;
                }
            }
    
            /// <summary>
            /// 使用存储过程执行的SqlCommand (即返回一个结果)对所提供的SqlTransaction 。.
            /// </summary>
            /// <param name="transaction">事务</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回结果集DataSet</returns>
            public static DataSet ExecuteDataset(SqlTransaction transaction, string spName, params object[] parameterValues)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供transaction");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供一个打开的transaction.", "transaction");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程名");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
    
                    AssignParameterValues(commandParameters, parameterValues);
    
                    return ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
                }
            }
    
            #endregion ExecuteDataset
    
            #region ExecuteReader
    
            /// <summary>
            /// 这个枚举用来表是把数据库连接对象交给sqlHelper来处理还是调用者自己进行处理
            /// </summary>
            private enum SqlConnectionOwnership
            {
                /// <summary>SqlHelper来处理</summary>
                Internal,
                /// <summary>调用者自行处理</summary>
                External
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个只读结果)
            /// </summary>
            /// <param name="connection">一个有效的SqlConnection </param>
            /// <param name="transaction">一个有效的SqlTransaction,可以为null</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <param name="connectionOwnership">sqlHelper来处理还是调用者自己进行处理数据库连接对象</param>
            /// <returns>返回一个只读结果</returns>
            private static SqlDataReader ExecuteReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, SqlConnectionOwnership connectionOwnership)
            {
                if (connection == null) throw new ArgumentNullException("没有提供SqlConnection对象");
    
                bool mustCloseConnection = true;
                SqlCommand cmd = new SqlCommand();
                cmd.CommandTimeout = 180;
                try
                {
                    PrepareCommand(cmd, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
                    SqlDataReader dataReader;
    
                    if (connectionOwnership == SqlConnectionOwnership.External)
                    {
                        dataReader = cmd.ExecuteReader();
                    }
                    else
                    {
                        dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                    }
                    bool canClear = true;
                    foreach (SqlParameter commandParameter in cmd.Parameters)
                    {
                        if (commandParameter.Direction != ParameterDirection.Input)
                            canClear = false;
                    }
                    if (canClear)
                    {
                        cmd.Parameters.Clear();
                    }
                    return dataReader;
                }
                catch
                {
                    if (mustCloseConnection)
                        connection.Close();
                    throw;
                }
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个只读结果,没有参数)
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回一个只读结果</returns>
            public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText)
            {
                return ExecuteReader(connectionString, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个只读结果)
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个只读结果</returns>
            public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                SqlConnection connection = null;
                try
                {
                    connection = new SqlConnection(connectionString);
                    connection.Open();
                    return ExecuteReader(connection, null, commandType, commandText, commandParameters, SqlConnectionOwnership.Internal);
                }
                catch
                {
                    if (connection != null) connection.Close();
                    throw;
                }
    
            }
    
            /// <summary>
            /// 使用存储过程执行SqlCommand (即返回一个只读结果)
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个只读结果</returns>
            public static SqlDataReader ExecuteReader(string connectionString, string spName, params object[] parameterValues)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程名");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
    
                    AssignParameterValues(commandParameters, parameterValues);
    
                    return ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个只读结果,没有参数)
            /// </summary>
            /// <param name="connection">一个有效的SqlConnection </param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回一个只读结果</returns>
            public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText)
            {
                return ExecuteReader(connection, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个只读结果)
            /// </summary>
            /// <param name="connection">一个有效的SqlConnection</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个只读结果</returns>
            public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                return ExecuteReader(connection, (SqlTransaction)null, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
            }
    
            /// <summary>
            /// 使用存储过程执行SqlCommand (即返回一个只读结果)
            /// </summary>
            /// <param name="connection">一个有效的SqlConnection</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个只读结果</returns>
            public static SqlDataReader ExecuteReader(SqlConnection connection, string spName, params object[] parameterValues)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程名");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
    
                    AssignParameterValues(commandParameters, parameterValues);
    
                    return ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteReader(connection, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个只读结果,没有传入的参数)对所提供的SqlTransaction 。.
            /// </summary>
            /// <param name="transaction">一个有效的SqlTransaction</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回一个只读结果</returns>
            public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText)
            {
                return ExecuteReader(transaction, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个只读结果)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">一个有效的SqlTransaction</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个只读结果</returns>
            public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供transaction");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供一个打开的transaction.", "transaction");
    
                return ExecuteReader(transaction.Connection, transaction, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
            }
    
            /// <summary>
            /// 使用存储过程执行的SqlCommand (即返回一个只读结果)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">一个有效的SqlTransaction</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回一个只读结果</returns>
            public static SqlDataReader ExecuteReader(SqlTransaction transaction, string spName, params object[] parameterValues)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供transaction");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供一个打开的transaction.", "transaction");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("存储过程");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
    
                    AssignParameterValues(commandParameters, parameterValues);
    
                    return ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteReader(transaction, CommandType.StoredProcedure, spName);
                }
            }
    
            #endregion ExecuteReader
    
            #region ExecuteScalar
    
            /// <summary>
            /// 执行的SqlCommand (即返回第一行第一列,不带参数)
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回数据库中第一行第一列的数据</returns>
            public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText)
            {
                return ExecuteScalar(connectionString, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回第一行第一列)
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回数据库中第一行第一列的数据</returns>
            public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                using (SqlConnection connection = new SqlConnection(connectionString))
                {
                    connection.Open();
                    return ExecuteScalar(connection, commandType, commandText, commandParameters);
                }
            }
    
            /// <summary>
            /// 使用存储过程执行的SqlCommand (即返回第一行第一列)
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回数据库中第一行第一列的数据</returns>
            public static object ExecuteScalar(string connectionString, string spName, params object[] parameterValues)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("存储过程名");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
                    AssignParameterValues(commandParameters, parameterValues);
                    return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            ///执行的SqlCommand (即返回第一行第一列,不带参数)
            /// </summary>
            /// <param name="connection">有效的数据库连接</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回数据库中第一行第一列的数据</returns>
            public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText)
            {
                return ExecuteScalar(connection, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 有效的数据库连接
            /// </summary>
            /// <param name="connection">有效的数据库连接</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回数据库中第一行第一列的数据</returns>
            public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                SqlCommand cmd = new SqlCommand();
    
                bool mustCloseConnection = true;
                PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
                object retval = cmd.ExecuteScalar();
    
                cmd.Parameters.Clear();
    
                if (mustCloseConnection)
                    connection.Close();
    
                return retval;
            }
    
            /// <summary>
            /// 使用存储过程执行的SqlCommand (即返回第一行第一列)
            /// </summary>
            /// <param name="connection">有效的数据库连接</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回数据库中第一行第一列的数据</returns>
            public static object ExecuteScalar(SqlConnection connection, string spName, params object[] parameterValues)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
    
                    AssignParameterValues(commandParameters, parameterValues);
                    return ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteScalar(connection, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行SqlCommand (即返回第一行第一列,不带参数)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">一个有效的SqlTransaction</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回数据库中第一行第一列的数据</returns>
            public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText)
            {
                return ExecuteScalar(transaction, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行SqlCommand (即返回第一行第一列)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">一个有效的SqlTransaction</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回数据库中第一行第一列的数据</returns>
            public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供SqlTransaction对象");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供一个打开的transaction", "transaction");
    
                SqlCommand cmd = new SqlCommand();
                bool mustCloseConnection = true;
                PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
                object retval = cmd.ExecuteScalar();
    
                cmd.Parameters.Clear();
                return retval;
            }
    
            /// <summary>
            /// 使用存储过程执行的SqlCommand (即返回第一行第一列)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">一个有效的SqlTransaction</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回数据库中第一行第一列的数据</returns>
            public static object ExecuteScalar(SqlTransaction transaction, string spName, params object[] parameterValues)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供SqlTransaction对象");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供一个打开的transaction", "transaction");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("存储过程名");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
    
                    AssignParameterValues(commandParameters, parameterValues);
                    return ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
                }
            }
    
            #endregion ExecuteScalar
    
            #region ExecuteXmlReader
            /// <summary>
            /// 执行的SqlCommand (即返回一个XmlReader,并没有任何参数)对所提供的SqlConnection 。
            /// </summary>
            /// <param name="connection">有效的数据库连接</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回的xmlReader对象</returns>
            public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText)
            {
                return ExecuteXmlReader(connection, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            ///  执行的SqlCommand (即返回一个XmlReader)对所提供的SqlConnection 。
            /// </summary>
            /// <param name="connection">有效的数据库连接</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回的xmlReader对象</returns>
            public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (connection == null) throw new ArgumentNullException("没有提供SqlConnection对象");
    
                bool mustCloseConnection = true;
                SqlCommand cmd = new SqlCommand();
                try
                {
                    PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
                    XmlReader retval = cmd.ExecuteXmlReader();
                    cmd.Parameters.Clear();
    
                    return retval;
                }
                catch
                {
                    if (mustCloseConnection)
                        connection.Close();
                    throw;
                }
            }
    
            /// <summary>
            /// 使用存储过程执行的SqlCommand (即返回一个XmlReader)对所提供的SqlConnection 。
            /// </summary>
            /// <param name="connection">有效的数据库连接</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回的xmlReader对象</returns>
            public static XmlReader ExecuteXmlReader(SqlConnection connection, string spName, params object[] parameterValues)
            {
                if (connection == null) throw new ArgumentNullException("没有提供SqlConnection对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("存储过程名");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
                    AssignParameterValues(commandParameters, parameterValues);
                    return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行SqlCommand (即返回第一行第一列,不带参数)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">一个有效的SqlTransaction</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <returns>返回的xmlReader对象</returns>
            public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText)
            {
                return ExecuteXmlReader(transaction, commandType, commandText, (SqlParameter[])null);
            }
    
            /// <summary>
            /// 执行SqlCommand (即返回第一行第一列)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">一个有效的SqlTransaction</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回的xmlReader对象</returns>
            public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供SqlTransaction对象");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供一个打开的transaction", "transaction");
                SqlCommand cmd = new SqlCommand();
                bool mustCloseConnection = true;
                PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
    
                XmlReader retval = cmd.ExecuteXmlReader();
    
                cmd.Parameters.Clear();
                return retval;
            }
    
            /// <summary>
            /// 使用存储过程执行SqlCommand (即返回第一行第一列)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">一个有效的SqlTransaction</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <returns>返回的xmlReader对象</returns>
            public static XmlReader ExecuteXmlReader(SqlTransaction transaction, string spName, params object[] parameterValues)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供SqlTransaction对象");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供一个打开的transaction", "transaction");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("存储过程");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
    
                    AssignParameterValues(commandParameters, parameterValues);
                    return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName);
                }
            }
    
            #endregion ExecuteXmlReader
    
            #region FillDataset
            /// <summary>
            /// 执行的SqlCommand (即返回一个DataSet,并没有任何参数)
            /// </summary>
            /// <param name="connectionString">数据库连接对象字符串</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableNames">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)</param>
            public static void FillDataset(string connectionString, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("缺少数据库连接字符串");
                if (dataSet == null) throw new ArgumentNullException("dataSet不能为null");
    
                using (SqlConnection connection = new SqlConnection(connectionString))
                {
                    connection.Open();
                    FillDataset(connection, commandType, commandText, dataSet, tableNames);
                }
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个DataSet)
            /// </summary>
            /// <param name="connectionString">数据库连接对象字符串</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableNames">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)
            /// </param>
            public static void FillDataset(string connectionString, CommandType commandType,
                string commandText, DataSet dataSet, string[] tableNames,
                params SqlParameter[] commandParameters)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("缺少数据库连接字符串");
                if (dataSet == null) throw new ArgumentNullException("dataSet不能为null");
                using (SqlConnection connection = new SqlConnection(connectionString))
                {
                    connection.Open();
                    FillDataset(connection, commandType, commandText, dataSet, tableNames, commandParameters);
                }
            }
    
            /// <summary>
            /// 使用存储过程执行的SqlCommand (即返回一个DataSet)
            /// </summary>
            /// <param name="connectionString">数据库连接对象字符串</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableNames">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)
            /// </param>    
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            public static void FillDataset(string connectionString, string spName,
                DataSet dataSet, string[] tableNames,
                params object[] parameterValues)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("缺少数据库连接字符串");
                if (dataSet == null) throw new ArgumentNullException("dataSet不能为null");
    
                using (SqlConnection connection = new SqlConnection(connectionString))
                {
                    connection.Open();
    
                    FillDataset(connection, spName, dataSet, tableNames, parameterValues);
                }
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个DataSet,不带参数)
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableNames">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)
            /// </param>    
            public static void FillDataset(SqlConnection connection, CommandType commandType,
                string commandText, DataSet dataSet, string[] tableNames)
            {
                FillDataset(connection, commandType, commandText, dataSet, tableNames, null);
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个DataSet)
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableNames">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)
            /// </param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            public static void FillDataset(SqlConnection connection, CommandType commandType,
                string commandText, DataSet dataSet, string[] tableNames,
                params SqlParameter[] commandParameters)
            {
                FillDataset(connection, null, commandType, commandText, dataSet, tableNames, commandParameters);
            }
    
            /// <summary>
            /// 执行的SqlCommand (即返回一个DataSet)
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableNames">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)
            /// </param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            public static void FillDataset(SqlConnection connection, string spName,
                DataSet dataSet, string[] tableNames,
                params object[] parameterValues)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                if (dataSet == null) throw new ArgumentNullException("dataSet不能为null");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("存储过程名");
    
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
                    AssignParameterValues(commandParameters, parameterValues);
                    FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters);
                }
                else
                {
                    FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames);
                }
            }
    
            /// <summary>
            /// 执行SqlCommand (即返回一个DataSet,不带参数)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">有效的SqlTransaction对象</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableNames">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)
            /// </param>
            public static void FillDataset(SqlTransaction transaction, CommandType commandType,
                string commandText,
                DataSet dataSet, string[] tableNames)
            {
                FillDataset(transaction, commandType, commandText, dataSet, tableNames, null);
            }
    
            /// <summary>
            /// 执行SqlCommand (即返回一个DataSet)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">有效的SqlTransaction对象</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableNames">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)
            /// </param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            public static void FillDataset(SqlTransaction transaction, CommandType commandType,
                string commandText, DataSet dataSet, string[] tableNames,
                params SqlParameter[] commandParameters)
            {
                FillDataset(transaction.Connection, transaction, commandType, commandText, dataSet, tableNames, commandParameters);
            }
    
            /// <summary>
            /// 使用存储过程执行SqlCommand (即返回一个DataSet)对所提供的SqlTransaction 。
            /// </summary>
            /// <param name="transaction">有效的SqlTransaction对象</param>
            /// <param name="spName">存储过程</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableNames">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)
            /// </param>
            /// <param name="parameterValues">以数组形式提供SqlCommand命令中用到的参数列表</param>
            public static void FillDataset(SqlTransaction transaction, string spName,
                DataSet dataSet, string[] tableNames,
                params object[] parameterValues)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供SqlTransaction对象");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供一个打开的transaction", "transaction");
                if (dataSet == null) throw new ArgumentNullException("dataSet不能为null");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("存储过程名");
    
                if ((parameterValues != null) && (parameterValues.Length > 0))
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
                    AssignParameterValues(commandParameters, parameterValues);
    
                    FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters);
                }
                else
                {
                    FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames);
                }
            }
    
            /// <summary>
            /// 私有方法,执行的SqlCommand (即返回一个结果集)对指定的SqlTransaction和SqlConnection使用提供的参数。
            /// </summary>
            /// <param name="connection">数据库连接对象</param>
            /// <param name="transaction">有效的SqlTransaction对象</param>
            /// <param name="commandType">SqlCommand命令类型 (存储过程, T-SQL语句, 等等。)</param>
            /// <param name="commandText">存储过程的名字或者 T-SQL 语句</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableNames">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)
            /// </param>
            /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
            private static void FillDataset(SqlConnection connection, SqlTransaction transaction, CommandType commandType,
                string commandText, DataSet dataSet, string[] tableNames,
                params SqlParameter[] commandParameters)
            {
                if (connection == null) throw new ArgumentNullException("没有提供SqlConnection对象");
                if (dataSet == null) throw new ArgumentNullException("dataSet不能为null");
    
                SqlCommand command = new SqlCommand();
                bool mustCloseConnection = true;
                PrepareCommand(command, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
    
                using (SqlDataAdapter dataAdapter = new SqlDataAdapter(command))
                {
    
                    if (tableNames != null && tableNames.Length > 0)
                    {
                        string tableName = "Table";
                        for (int index = 0; index < tableNames.Length; index++)
                        {
                            if (tableNames[index] == null || tableNames[index].Length == 0) throw new ArgumentException("该tableNames参数必须包含一个表格中的字段,这里提供了一个值为空或空字符串.", "tableNames");
                            dataAdapter.TableMappings.Add(tableName, tableNames[index]);
                            tableName += (index + 1).ToString();
                        }
                    }
    
                    dataAdapter.Fill(dataSet);
                    command.Parameters.Clear();
                }
    
                if (mustCloseConnection)
                    connection.Close();
            }
            #endregion
    
            #region UpdateDataset
            /// <summary>
            /// 执行各自的命令为每个插入,更新或删除的行中的数据。
            /// </summary>
    
            /// <param name="insertCommand">插入的SqlCommand</param>
            /// <param name="deleteCommand">删除的SqlCommand</param>
            /// <param name="updateCommand">更新的SqlCommand</param>
            /// <param name="dataSet">一个DataSet ,其中将载有结果</param>
            /// <param name="tableName">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)</param>
            public static void UpdateDataset(SqlCommand insertCommand, SqlCommand deleteCommand, SqlCommand updateCommand, DataSet dataSet, string tableName)
            {
                if (insertCommand == null) throw new ArgumentNullException("没有提供插入的SqlCommand");
                if (deleteCommand == null) throw new ArgumentNullException("没有提供删除的SqlCommand");
                if (updateCommand == null) throw new ArgumentNullException("没有提供更新的SqlCommand");
                if (tableName == null || tableName.Length == 0) throw new ArgumentNullException("没有提供tableName");
    
                using (SqlDataAdapter dataAdapter = new SqlDataAdapter())
                {
                    dataAdapter.UpdateCommand = updateCommand;
                    dataAdapter.InsertCommand = insertCommand;
                    dataAdapter.DeleteCommand = deleteCommand;
    
                    dataAdapter.Update(dataSet, tableName);
    
                    dataSet.AcceptChanges();
                }
            }
            #endregion
    
            #region CreateCommand
            /// <summary>
            /// 简化建立一个SQL命令对象,允许存储过程和可选的参数
            /// </summary>
            /// <param name="connection">有效的SqlConnection对象</param>
            /// <param name="spName">存储过程</param>
            /// <param name="sourceColumns">该数组将被用于创建表映射允许DataTables被引用的用户定义的名称(可能是实际的表名称)</param>
            /// <returns>sql命令对象</returns>
            public static SqlCommand CreateCommand(SqlConnection connection, string spName, params string[] sourceColumns)
            {
                if (connection == null) throw new ArgumentNullException("没有提供SqlConnection对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("存储过程名");
    
                SqlCommand cmd = new SqlCommand(spName, connection);
                cmd.CommandType = CommandType.StoredProcedure;
    
                if ((sourceColumns != null) && (sourceColumns.Length > 0))
                {
    
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
    
                    for (int index = 0; index < sourceColumns.Length; index++)
                        commandParameters[index].SourceColumn = sourceColumns[index];
    
                    AttachParameters(cmd, commandParameters);
                }
    
                return cmd;
            }
            #endregion
    
            #region ExecuteNonQueryTypedParams
            /// <summary>
            /// 执行存储过程通过的SqlCommand (没有返回结果)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="spName">存储过程</param>
            /// <param name="dataRow">储存参数值的DataRow.</param>
            /// <returns>返回更新的行数</returns>
            public static int ExecuteNonQueryTypedParams(String connectionString, String spName, DataRow dataRow)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程名");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行存储过程通过的SqlCommand (没有返回结果)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="connection">有效的SqlConnection对象</param>
            /// <param name="spName">存储过程</param>
            /// <param name="dataRow">储存参数值的DataRow.</param>
            /// <returns>返回更新的行数</returns>
            public static int ExecuteNonQueryTypedParams(SqlConnection connection, String spName, DataRow dataRow)
            {
                if (connection == null) throw new ArgumentNullException("没有提供SqlConnection对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
    
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行存储过程通过的SqlCommand (没有返回结果)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="transaction">有效的SqlTransaction对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow</param>
            /// <returns>返回更新的行数</returns>
            public static int ExecuteNonQueryTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供SqlTransaction对象");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供有连接的SqlTransaction对象", "transaction");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
                }
            }
            #endregion
    
            #region ExecuteDatasetTypedParams
            /// <summary>
            ///执行预存程序通过的SqlCommand (返回DataSet)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow</param>
            /// <returns>返回结果集Dataset</returns>
            public static DataSet ExecuteDatasetTypedParams(string connectionString, String spName, DataRow dataRow)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行预存程序通过的SqlCommand (返回DataSet)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="connection">有效的SqlConnection对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow</param>
            /// <returns>返回结果集Dataset</returns>
            public static DataSet ExecuteDatasetTypedParams(SqlConnection connection, String spName, DataRow dataRow)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行预存程序通过的SqlCommand (返回DataSet)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="transaction">有效的SqlTransaction对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow</param>
            /// <returns>返回结果集Dataset</returns>
            public static DataSet ExecuteDatasetTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供SqlTransaction对象");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供有连接的SqlTransaction对象", "transaction");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
                }
            }
    
            #endregion
    
            #region ExecuteReaderTypedParams
            /// <summary>
            /// 执行预存程序通过的SqlCommand (返回SqlDataReader)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow</param>
            /// <returns>返回结果集SqlDataReader</returns>
            public static SqlDataReader ExecuteReaderTypedParams(String connectionString, String spName, DataRow dataRow)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
    
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
                }
            }
    
    
            /// <summary>
            /// 执行预存程序通过的SqlCommand (返回SqlDataReader)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="connection">有效的SqlConnection对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow</param>
            /// <returns>返回结果集SqlDataReader</returns>
            public static SqlDataReader ExecuteReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行预存程序通过的SqlCommand (返回SqlDataReader)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="transaction">有效的SqlTransaction对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow</param>
            /// <returns>返回结果集SqlDataReader</returns>
            public static SqlDataReader ExecuteReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供SqlTransaction对象");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供有连接的SqlTransaction对象.", "transaction");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName);
                }
            }
            #endregion
    
            #region ExecuteScalarTypedParams
            /// <summary>
            /// 执行预存程序通过的SqlCommand (返回第一行第一列)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="connectionString">数据库连接字符串</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow</param>
            /// <returns>返回第一行第一列</returns>
            public static object ExecuteScalarTypedParams(String connectionString, String spName, DataRow dataRow)
            {
                if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("没有提供数据库连接字符串");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行预存程序通过的SqlCommand (返回第一行第一列)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="connection">有效的SqlConnection对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow</param>
            /// <returns>返回第一行第一列</returns>
            public static object ExecuteScalarTypedParams(SqlConnection connection, String spName, DataRow dataRow)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
    
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行预存程序通过的SqlCommand (返回第一行第一列)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="transaction">有效的SqlTransaction对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow.</param>
            /// <returns>返回第一行第一列</returns>
            public static object ExecuteScalarTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供SqlTransaction对象");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供有连接的SqlTransaction对象", "transaction");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
    
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
                }
            }
            #endregion
    
            #region ExecuteXmlReaderTypedParams
            /// <summary>
            /// 执行预存程序通过的SqlCommand (返回XmlReader)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="connection">有效的SqlConnection对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow.</param>
            /// <returns>返回XmlReader</returns>
            public static XmlReader ExecuteXmlReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow)
            {
                if (connection == null) throw new ArgumentNullException("没有提供数据库连接对象");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName);
                }
            }
    
            /// <summary>
            /// 执行预存程序通过的SqlCommand (返回XmlReader)使用的DataRow列的值的存储过程的参数值。这种方法将查询数据库,发现参数的存储过程(第一次每一个存储过程被称为) ,并指定值的基础上连续值。
            /// </summary>
            /// <param name="transaction">有效的SqlTransaction对象</param>
            /// <param name="spName">存储过程名</param>
            /// <param name="dataRow">储存参数值的DataRow.</param>
            /// <returns>返回XmlReader</returns>
            public static XmlReader ExecuteXmlReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
            {
                if (transaction == null) throw new ArgumentNullException("没有提供SqlTransaction对象");
                if (transaction != null && transaction.Connection == null) throw new ArgumentException("没有提供有连接的SqlTransaction对象.", "transaction");
                if (spName == null || spName.Length == 0) throw new ArgumentNullException("没有提供存储过程");
    
                if (dataRow != null && dataRow.ItemArray.Length > 0)
                {
    
                    SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
                    AssignParameterValues(commandParameters, dataRow);
    
                    return SqlHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
                }
                else
                {
                    return SqlHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName);
                }
            }
            #endregion
    
            /// <summary>
            /// 执行多条SQL语句,实现数据库事务。
            /// </summary>
            /// <param name="connectionString">多条SQL语句</param>    
            /// <param name="SQLStringList">多条SQL语句</param>    
            /// <returns>影响的记录数</returns>
            public static int ExecuteSqlTran(string connectionString, List<String> SQLStringList)
            {
                using (SqlConnection conn = new SqlConnection(connectionString))
                {
                    conn.Open();
                    SqlCommand cmd = new SqlCommand();
                    cmd.Connection = conn;
                    SqlTransaction tx = conn.BeginTransaction();
                    cmd.Transaction = tx;
                    try
                    {
                        int count = 0;
                        for (int n = 0; n < SQLStringList.Count; n++)
                        {
                            string strsql = SQLStringList[n];
                            if (strsql.Trim().Length > 1)
                            {
                                cmd.CommandText = strsql;
                                count += cmd.ExecuteNonQuery();
                            }
                        }
                        tx.Commit();
                        return count;
                    }
                    catch
                    {
                        tx.Rollback();
                        return 0;
                    }
                }
            }
    
    
            /// <summary>
            /// 执行多条SQL语句,实现数据库事务。
            /// </summary>
            /// <param name="connectionString">泛型列</param>
            /// <param name="SQLStringList">泛型列</param>
            /// <returns>影响的记录数</returns>
            public static int ExecuteSqlTran(string connectionString, List<CommandInfo> cmdList)
            {
                using (SqlConnection conn = new SqlConnection(connectionString))
                {
                    conn.Open();
                    using (SqlTransaction trans = conn.BeginTransaction())
                    {
                        SqlCommand cmd = new SqlCommand();
                        cmd.Connection = conn;
                        cmd.Transaction = trans;
                        int count = 0;
                        //循环
                        foreach (CommandInfo myDE in cmdList)
                        {
                            cmd.Parameters.Clear();
                            cmd.CommandText = myDE.CommandText;
                            cmd.CommandType = myDE.CommandType;
                            AttachParameters(cmd, myDE.Parameters);
                            try
                            {
                                int result = cmd.ExecuteNonQuery();
                                count += result;
                            }
                            catch
                            {
                                trans.Rollback();
                                return 0;
                            }
                        }
                        trans.Commit();
                        return count;
    
                    }
                }
            }
    
            /// <summary>
            /// 执行多条SQL语句,实现数据库事务。
            /// </summary>
            /// <param name="connectionString">泛型列</param>
            /// <param name="SQLStringList">泛型列</param>
            /// <returns>影响的记录数</returns>
            public static int ExecuteSqlTranWithException(string connectionString, List<CommandInfo> cmdList)
            {
                using (SqlConnection conn = new SqlConnection(connectionString))
                {
                    conn.Open();
                    using (SqlTransaction trans = conn.BeginTransaction())
                    {
                        SqlCommand cmd = new SqlCommand();
                        cmd.Connection = conn;
                        cmd.Transaction = trans;
                        int count = 0;
                        //循环
                        foreach (CommandInfo myDE in cmdList)
                        {
                            cmd.Parameters.Clear();
                            cmd.CommandText = myDE.CommandText;
                            cmd.CommandType = myDE.CommandType;
                            AttachParameters(cmd, myDE.Parameters);
                            try
                            {
                                int result = cmd.ExecuteNonQuery();
                                count += result;
                            }
                            catch (Exception ex)
                            {
                                trans.Rollback();
                                throw;
                            }
                        }
                        trans.Commit();
                        return count;
    
                    }
                }
            }
    
            ///<summary>
            ///直接通过DataSet更新数据库表
            ///</summary>
            ///<param name="ds"></param>
            ///<param name="strTblName">ds中要更新的表名</param>
            ///<param name="strConnection"></param>
            ///<returns></returns>
            public static int UpdateByDataSet(DataSet ds, string strTblName, string strConnection)
            {
    
                SqlConnection conn = new SqlConnection(strConnection);
    
                SqlDataAdapter myAdapter = new SqlDataAdapter();
                SqlCommand myCommand = new SqlCommand("select  * from " + strTblName, conn);
                myAdapter.SelectCommand = myCommand;
                SqlCommandBuilder myCommandBuilder = new SqlCommandBuilder(myAdapter);
                return myAdapter.Update(ds, strTblName);
            }
    
            /// <summary>
            /// 判断reader里是否存在列名
            /// </summary>
            /// <param name="reader"></param>
            /// <param name="name"></param>
            /// <returns></returns>
            public static bool ContainsField(IDataReader reader, string name)
            {
                for (int i = 0; i < reader.FieldCount; i++)
                {
                    if (reader.GetName(i) == name)
                        return true;
                }
    
                return false;
            }
    
        }
    public class CommandInfo
        {
            private string _commandText;
            private CommandType _commandType;
    
            public CommandType CommandType
            {
                get { return _commandType; }
                set { _commandType = value; }
            }
            public string CommandText
            {
                get { return _commandText; }
                set { _commandText = value; }
            }
            private SqlParameter[] _parameters;
    
            public SqlParameter[] Parameters
            {
                get { return _parameters; }
                set { _parameters = value; }
            }
    
            public CommandInfo(string sqlText, SqlParameter[] para, CommandType ct)
            {
                _commandText = sqlText;
                _parameters = para;
                _commandType = ct;
            }
        }
  • 相关阅读:
    Java技术学习笔记:C/S 与B/S 区别
    Java开发面试题总结(八)
    Java技术笔记:数据库的性能优化
    零基础学习Python可以学会吗?你有哪些方法?
    java培训学习路线图之SpringBoot多模块开发学习
    计算机专业选Java和Python哪个前景好点?
    bzoj2152 聪聪可可
    bzoj1468 Tree
    bzoj2879 [Noi2012]美食节
    bzoj2208 [Jsoi2010]连通数
  • 原文地址:https://www.cnblogs.com/Darker-Samuel/p/5909265.html
Copyright © 2011-2022 走看看