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  • 分页存储过程

    这个是我在项目中用到的存储过程分页,现在摘录下来

    在SQL数据库编写存储过程语句

    1 USE [ExTzglDev]
    2 GO
    3
    4 /****** Object: StoredProcedure [dbo].[UP_GetRecordByPage] Script Date: 07/11/2011 11:16:57 ******/
    5 SET ANSI_NULLS ON
    6 GO
    7
    8 SET QUOTED_IDENTIFIER ON
    9 GO
    10
    11
    12
    13 Create PROCEDURE [dbo].[UP_GetRecordByPage]
    14 @TableName varchar(255), -- 表名
    15 @PageSize int = 10, -- 页尺寸
    16 @PageIndex int = 1, -- 页码
    17 @OrderColumn varchar(255), -- 主排序字段名()
    18 @OrderType varchar(4)='Asc', -- 设置排序类型, 0 值表示升序
    19 @WhereStr varchar(1500)='', -- 查询条件 (注意: 不要加 where)
    20 @TotalCount int output, -- 返回记录总数
    21 @OrderBy varchar(255)='' -- 副排序字段名
    22 AS
    23 Declare @strSQL varchar(4000) -- 主语句
    24 Declare @Sort nvarchar(500)
    25
    26 if @OrderColumn <> ''
    27 Begin
    28 if UPPER( @OrderType) = 'ASC'
    29 set @Sort = @OrderColumn+' Asc'
    30 else
    31 set @Sort = @OrderColumn+' Desc'
    32 End
    33 if @OrderBy <> ''
    34 set @Sort = @Sort+','+@OrderBy
    35
    36 Set @strSQL = 'SELECT * FROM (SELECT *,ROW_NUMBER() OVER(Order By '+@Sort+') AS rownum
    37 FROM '
    38 if @WhereStr =''
    39 set @strSQL = @strSQL+' '+@TableName+' ) AS D'
    40 else
    41 set @strSQL = @strSQL+'(Select * From '+@TableName+' WHERE ('+ @WhereStr+')) AS B) AS D'
    42
    43 set @strSQL = @strSQL + ' WHERE (rownum BETWEEN '+str((@PageIndex-1)*@PageSize+1)+' AND '+str(@PageIndex*@PageSize)+')'-- Order By ' + @Sort
    44
    45 Declare @strCount nvarchar(2000)
    46 if @WhereStr <> ''
    47 set @strCount =N'select @TotalCount=Count(*) from ['+@TableName+'] Where ('+@WhereStr+')'
    48 else
    49 set @strCount =N'select @TotalCount=Count(*) from ['+ @TableName +']'
    50
    51 execute sp_executesql @strCount,N'@TotalCount int output',@TotalCount output
    52
    53 exec (@strSQL)
    54 return @TotalCount
    55
    56
    57
    58
    59 GO

    在数据操作层DAL的代码:

    1 /// <summary>
    2 /// 分页获取数据列表
    3 /// </summary>
    4 /// <param name="fieldlist">查找的字段</param>
    5 /// <param name="tablename">表名</param>
    6 /// <param name="where">查询条件</param>
    7 /// <param name="orderfield">排序字段</param>
    8 /// <param name="key">主键</param>
    9 /// <param name="pageindex">页索引</param>
    10 /// <param name="pagesize">每页记录数</param>
    11 /// <param name="ordertype">排序方式 0=ASC 1=DESC</param>
    12 /// <param name="recordcount">总记录数</param>
    13 /// <returns></returns>
    14 public DataTable GetPagerData(string tablename,string where, string orderfield,string orderDerect, int pageindex, int pagesize, out int totalCount )
    15 {
    16 SqlParameter[] para = new SqlParameter[7];
    17 para[0] = new SqlParameter("@TableName", tablename);
    18 para[1] = new SqlParameter("@PageSize", pagesize);
    19 para[2] = new SqlParameter("@PageIndex", pageindex);
    20 para[3] = new SqlParameter("@OrderColumn", orderfield);
    21 para[4] = new SqlParameter("@OrderType", orderDerect.Trim() == "" ? "Asc" : orderDerect);
    22 para[5] = new SqlParameter("@WhereStr", where);
    23 para[6] = new SqlParameter("@TotalCount", SqlDbType.Int);
    24 para[6].Direction = ParameterDirection.Output;
    25 DataTable dt = DbHelperSQL.RunProcedure("UP_GetRecordByPage", para, "resultSet").Tables[0];
    26 totalCount = int.Parse(para[6].Value.ToString());
    27 return dt;
    28
    29 }

    同在数据操作层的 DbHelperSQL代码为:

    View Code
    1 /// <summary>
    2 /// 执行存储过程
    3 /// </summary>
    4 /// <param name="storedProcName">存储过程名</param>
    5 /// <param name="parameters">存储过程参数</param>
    6 /// <param name="tableName">DataSet结果中的表名</param>
    7 /// <returns>DataSet</returns>
    8 public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
    9 {
    10 using (SqlConnection connection = new SqlConnection(connectionString))
    11 {
    12 DataSet dataSet = new DataSet();
    13 connection.Open();
    14 SqlDataAdapter sqlDA = new SqlDataAdapter();
    15 sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
    16 sqlDA.Fill(dataSet, tableName);
    17 connection.Close();
    18 return dataSet;
    19 }
    20 }

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  • 原文地址:https://www.cnblogs.com/jiekk/p/2103053.html
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