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  • T4 生成实体和简单的CRUD操作

    <#@ template debug="false" hostspecific="false" language="C#" #>
    <#@ assembly name="System.Core.dll" #>
    <#@ assembly name="System.Data.dll" #>
    <#@ assembly name="System.Data.DataSetExtensions.dll" #>
    <#@ assembly name="System.Xml.dll" #>
    <#@ assembly name="MySql.Data" #>
    <#@ import namespace="System" #>
    <#@ import namespace="System.Xml" #>
    <#@ import namespace="System.Linq" #>
    <#@ import namespace="System.Text" #>
    <#@ import namespace="System.Data" #>
    <#@ import namespace=" System.Data.SqlClient" #>
    <#@ import namespace="MySql.Data.MySqlClient" #>
    <#@ import namespace="System.Collections.Generic" #>
    <#@ import namespace="System.IO" #>
    <#@ import namespace="System.Text.RegularExpressions" #><#+
    
    	#region GetDbTables
        public class DbHelper
        {
    
    		#region 去下划线,转大写
            public static string ToSplitFirstUpper(string file)
            {
                string[] words = file.Split('_');
                StringBuilder firstUpperWorld = new StringBuilder();
                foreach (string word in words)
                {
                    string firstUpper = ToFirstUpper(word);
                    firstUpperWorld.Append(firstUpper);
                }
                string firstUpperFile = firstUpperWorld.ToString().TrimEnd(new char[] { '_' });
                return firstUpperFile;
            }
    
            // 将字符串设置成首字母大写
            public static string ToFirstUpper(string field)
            {
                string first = field.Substring(0, 1).ToUpperInvariant();
                string result = first;
                if (field.Length > 1)
                {
                    string after = field.Substring(1);
                    result = first + after;
                }
                return result;
            }
    
            #endregion
    
            #region 生成简单的sql语句
            public static string GetInsertSql(string connectionString, string database, string tableName)
            {
                var list = GetDbColumns(connectionString, database, tableName);
                StringBuilder sb1 = new StringBuilder();
                StringBuilder sb2 = new StringBuilder();
                foreach (var item in list)
                {
                    string field = item.Field;
                    if (field.ToLower() == "id") continue;
                    sb1.Append(field).Append(", ");
                    sb2.Append("?").Append(field).Append(", ");
                }
                string s1 = sb1.ToString().Trim(new char[] { ',', ' ' });
                string s2 = sb2.ToString().Trim(new char[] { ',', ' ' });
                return string.Format("INSERT INTO {0}({1}) VALUES({2})", tableName, s1, s2);
    
            }
    
            public static string GetParameter(string connectionString, string database, string tableName, bool hasId)
            {
                var list = GetDbColumns(connectionString, database, tableName);
                StringBuilder sb = new StringBuilder();
                sb.Append("MySqlParameter[] paras = new MySqlParameter[] { 
    ");
                foreach (var item in list)
                {
                    if (item.Field.ToLower() == "id" && !hasId) continue;
                    sb.AppendFormat("				 new MySqlParameter("{0}", this.{1}),
    ", item.Field, ToSplitFirstUpper(item.Field));
                }
                string s = sb.ToString().Trim(new char[] { ',', ' ', '
    ', '
    ' });
                s = s + "
    			};
    ";
                return s;
            }
    
            public static string GetUpdateSql(string connectionString, string database, string tableName)
            {
                var list = GetDbColumns(connectionString, database, tableName);
                StringBuilder sb1 = new StringBuilder();
                foreach (var item in list)
                {
                    string field = item.Field;
                    if (field.ToLower() == "id") continue;
                    sb1.Append(field).Append(" = ").Append("?").Append(field).Append(", ");
    
    
                }
                string s1 = sb1.ToString().Trim(new char[] { ',', ' ' });
                return string.Format("UPDATE {0} SET {1} WHERE id = ?id", tableName, s1);
    
            }
    
            #endregion
    
            #region GetDbTables
    
            public static List<DbTable> GetDbTables(string connectionString, string database)
            {
    
                #region SQL
                string sql = string.Format("SHOW TABLE STATUS FROM {0};", database);
                #endregion
                DataTable dt = GetDataTable(connectionString, sql);
                return dt.Rows.Cast<DataRow>().Select(row => new DbTable
                {
                    TableName = row.Field<string>("Name"),
                    Rows = row.Field<UInt64>("Rows"),
                    Comment = row.Field<string>("Comment")
                }).ToList();
            }
            #endregion
    
            #region GetDbColumns
    
            public static List<DbColumn> GetDbColumns(string connectionString, string database, string tableName)
            {
                #region SQL
                string sql = string.Format("SHOW FULL COLUMNS FROM {0} FROM {1};", tableName, database);
                #endregion
                DataTable dt = GetDataTable(connectionString, sql);
                return dt.Rows.Cast<DataRow>().Select(row => new DbColumn
                {
                    IsPrimaryKey = !String.IsNullOrEmpty(row.Field<string>("Key")),
                    Field = row.Field<string>("Field"),
                    Type = row.Field<string>("Type"),
                    Comment = row.Field<string>("Comment"),
                    IsNullable = row.Field<string>("NULL") == "YES"
                }).ToList();
            }
    
            #endregion
    
    
            #region GetDataTable
    
            public static DataTable GetDataTable(string connectionString, string commandText, params SqlParameter[] parms)
            {
                using (MySqlConnection connection = new MySqlConnection(connectionString))
                {
                    MySqlCommand command = connection.CreateCommand();
                    command.CommandText = commandText;
                    command.Parameters.AddRange(parms);
                    MySqlDataAdapter adapter = new MySqlDataAdapter(command);
    
                    DataTable dt = new DataTable();
                    adapter.Fill(dt);
    
                    return dt;
                }
            }
    
            #endregion
        }
        #endregion
    
        #region DbTable
        /// <summary>
        /// 表结构
        /// </summary>
        public sealed class DbTable
        {
            /// <summary>
            /// 表名称
            /// </summary>
            public string TableName { get; set; }
    
            /// <summary>
            /// 行数
            /// </summary>
            public UInt64 Rows { get; set; }
    
            /// <summary>
            /// 描写叙述信息
            /// </summary>
            public string Comment { get; set; }
        }
        #endregion
    
        #region DbColumn
        /// <summary>
        /// 表字段结构
        /// </summary>
        public sealed class DbColumn
        {
            /// <summary>
            /// 是否主键
            /// </summary>
            public bool IsPrimaryKey { get; set; }
            /// <summary>
            /// 字段名称
            /// </summary>
            public string Field { get; set; }
            /// <summary>
            /// 字段类型 int(11)
            /// </summary>
            public string Type { get; set; }
            /// <summary>
            /// 字段类型int
            /// </summary>
            public string ColumnType
            {
                get
                {
                    return Type.IndexOf('(') == -1 ? Type : Type.Substring(0, Type.IndexOf('('));
                }
            }
            /// <summary>
            /// 数据库类型相应的C#类型
            /// </summary>
            public string CSharpType
            {
                get
                {
                    return MysqlDbTypeMap.MapCsharpType(ColumnType);
                }
            }
            /// <summary>
            /// 
            /// </summary>
            public Type CommonType
            {
                get
                {
                    return MysqlDbTypeMap.MapCommonType(ColumnType);
                }
            }
            /// <summary>
            /// 描写叙述
            /// </summary>
            public string Comment { get; set; }
            /// <summary>
            /// 是否同意空
            /// </summary>
            public bool IsNullable { get; set; }
    
            /// <summary>
            /// 字符长度
            /// </summary>
            public int CharLength
            {
                get
                {
                    Regex regex = new Regex(@"(?<=()d*?(?=))", RegexOptions.Singleline);
                    if (regex.IsMatch(Type))
                    {
                        Match match = regex.Match(Type);
                        while (match != null && match.Success)
                        {
                            int charLength;
                            if (Int32.TryParse(match.Value, out charLength))
                            {
                                return charLength;
                            }
                        }
                    }
                    return 0;
                }
            }
        }
        #endregion
    
        #region SqlServerDbTypeMap
    
        public class MysqlDbTypeMap
        {
            public static string MapCsharpType(string dbtype)
            {
                if (string.IsNullOrEmpty(dbtype)) return dbtype;
                dbtype = dbtype.ToLower();
                string csharpType = "object";
                switch (dbtype)
                {
                    case "bigint": csharpType = "long"; break;
                    case "binary": csharpType = "byte[]"; break;
                    case "bit": csharpType = "bool"; break;
                    case "char": csharpType = "string"; break;
                    case "date": csharpType = "DateTime"; break;
                    case "datetime": csharpType = "DateTime"; break;
                    case "datetime2": csharpType = "DateTime"; break;
                    case "datetimeoffset": csharpType = "DateTimeOffset"; break;
                    case "dityint": csharpType = "bool"; break;
                    case "decimal": csharpType = "decimal"; break;
                    case "float": csharpType = "double"; break;
                    case "image": csharpType = "byte[]"; break;
                    case "int": csharpType = "int"; break;
                    case "money": csharpType = "decimal"; break;
                    case "nchar": csharpType = "string"; break;
                    case "ntext": csharpType = "string"; break;
                    case "numeric": csharpType = "decimal"; break;
                    case "nvarchar": csharpType = "string"; break;
                    case "real": csharpType = "Single"; break;
                    case "smalldatetime": csharpType = "DateTime"; break;
                    case "smallint": csharpType = "short"; break;
                    case "smallmoney": csharpType = "decimal"; break;
                    case "sql_variant": csharpType = "object"; break;
                    case "sysname": csharpType = "object"; break;
                    case "text": csharpType = "string"; break;
    				case "longtext": csharpType = "string"; break;
                    case "time": csharpType = "TimeSpan"; break;
                    case "timestamp": csharpType = "byte[]"; break;
                    case "tinyint": csharpType = "byte"; break;
                    case "uniqueidentifier": csharpType = "Guid"; break;
                    case "varbinary": csharpType = "byte[]"; break;
                    case "varchar": csharpType = "string"; break;
                    case "xml": csharpType = "string"; break;
                    default: csharpType = "object"; break;
                }
                return csharpType;
            }
    
            public static Type MapCommonType(string dbtype)
            {
                if (string.IsNullOrEmpty(dbtype)) return Type.Missing.GetType();
                dbtype = dbtype.ToLower();
                Type commonType = typeof(object);
                switch (dbtype)
                {
                    case "bigint": commonType = typeof(long); break;
                    case "binary": commonType = typeof(byte[]); break;
                    case "bit": commonType = typeof(bool); break;
                    case "char": commonType = typeof(string); break;
                    case "date": commonType = typeof(DateTime); break;
                    case "datetime": commonType = typeof(DateTime); break;
                    case "datetime2": commonType = typeof(DateTime); break;
                    case "datetimeoffset": commonType = typeof(DateTimeOffset); break;
                    case "dityint": commonType = typeof(Boolean); break;
                    case "decimal": commonType = typeof(decimal); break;
                    case "float": commonType = typeof(double); break;
                    case "image": commonType = typeof(byte[]); break;
                    case "int": commonType = typeof(int); break;
                    case "money": commonType = typeof(decimal); break;
                    case "nchar": commonType = typeof(string); break;
                    case "ntext": commonType = typeof(string); break;
                    case "numeric": commonType = typeof(decimal); break;
                    case "nvarchar": commonType = typeof(string); break;
                    case "real": commonType = typeof(Single); break;
                    case "smalldatetime": commonType = typeof(DateTime); break;
                    case "smallint": commonType = typeof(short); break;
                    case "smallmoney": commonType = typeof(decimal); break;
                    case "sql_variant": commonType = typeof(object); break;
                    case "sysname": commonType = typeof(object); break;
                    case "text": commonType = typeof(string); break;
                    case "time": commonType = typeof(TimeSpan); break;
                    case "timestamp": commonType = typeof(byte[]); break;
                    case "tinyint": commonType = typeof(byte); break;
                    case "uniqueidentifier": commonType = typeof(Guid); break;
                    case "varbinary": commonType = typeof(byte[]); break;
                    case "varchar": commonType = typeof(string); break;
                    case "xml": commonType = typeof(string); break;
                    default: commonType = typeof(object); break;
                }
                return commonType;
            }
        }
        #endregion
    
    #>

    主要跟大家交流下T4,我这里针对的是mysql,我本人比較喜欢用mysql,所以语法针对mysql,所以你要准备mysql的DLL了,同理sqlserver差点儿相同,有兴趣能够自己写写,首先网上找了一个T4的帮助类,得到一些数据库属性,命名为 DbHelper.ttinclude


    在加一个c#的sql帮助类, 命名为DBHelper.cs

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Data;
    using System.Data.SqlClient;
    using System.Security.Cryptography;
    using System.Configuration;
    using MySql.Data.MySqlClient;
    using System.Reflection;
    using System.Text;
    
    namespace ToolSite.Entity
    {
    
        public class DBHelper
        {
            //加入�到配置文件的<configuration>节点中
            //   <connectionStrings>
            //       <!--改写数据库名,登陆名,password-->
            //        <add name="conStr" connectionString="Data Source=.;Initial Catalog=;User ID=;Password="/>
            //  
            //   </connectionStrings>
            //<appSettings>
            //      <add key="dbConnection" value="server=192.168.1.111SQL2005;database=GCUMS;UID=sa;PWD=sa;max pool size=20000;Pooling=true;"/>
            //  </appSettings>
            //先加入�configuration引用,引入命名空间
            //private static readonly string conStr = ConfigurationManager.AppSettings["connstr"]; 
            //private static readonly string conStr = Config.ConnStr;
            /// <summary>
            /// 获得连接字符串
            /// </summary>
            /// <returns></returns>
            public static MySqlConnection getConn()
            {
                return new MySqlConnection(Config.ConnStr);
            }
            /// <summary>
            /// 查询获得首行首列的值,格式化SQL语句
            /// </summary>
            /// <param name="sql"></param>
            /// <returns></returns>
            public static object Scalar(String sql)
            {
                using (MySqlConnection con = getConn())
                {
                    try
                    {
                        MySqlCommand com = new MySqlCommand(sql, con);
                        con.Open();
                        return com.ExecuteScalar();
                    }
                    catch (Exception ex)
                    {
                        throw ex;
                    }
                }
            }
            /// <summary>
            /// 查询获得首行首列的值 參数化sql语句
            /// </summary>
            /// <param name="paras">參数数组</param>
            /// <param name="sql">sql语句</param>
            /// <returns></returns>
            public static object Scalar(string sql, MySqlParameter[] paras)
            {
                using (MySqlConnection con = getConn())
                {
                    try
                    {
                        MySqlCommand com = new MySqlCommand(sql, con);
                        con.Open();
                        if (paras != null) //假设參数
                        {
                            com.Parameters.AddRange(paras);
                        }
                        return com.ExecuteScalar();
                    }
                    catch (Exception ex)
                    {
                        throw ex;
    
                    }
                }
            }
    
            /// <summary>
            /// 增删改操作,返回受影响的行数,格式化SQL语句
            /// </summary>
            /// <param name="sql"></param>
            /// <returns></returns>
            public static int NoneQuery(String sql)
            {
    
                using (MySqlConnection conn = getConn())
                {
                    conn.Open();
                    using (MySqlCommand comm = new MySqlCommand(sql, conn))
                    {
                        return comm.ExecuteNonQuery();
                    }
    
                }
            }
            /// <summary>
            /// 增删改操作,返回受影响的行数 存储过程
            /// </summary>
            /// <param name="sql">存储过程名称</param>
            /// <param name="paras">參数</param>
            /// <returns></returns>
            public static int NoneQuery(String sql, MySqlParameter[] paras)
            {
                using (MySqlConnection conn = getConn())
                {
                    conn.Open();
                    using (MySqlCommand comm = new MySqlCommand(sql, conn))
                    {
                        comm.Parameters.AddRange(paras);
                        return comm.ExecuteNonQuery();
                    }
    
                }
            }
            /// <summary>
            /// 查询操作,返回一个数据表
            /// </summary>
            /// <param name="sql"></param>
            /// <returns></returns>
            public static DataTable GetDateTable(String sql)
            {
                using (MySqlConnection con = getConn())
                {
                    DataTable dt = new DataTable();
                    try
                    {
                        MySqlDataAdapter sda = new MySqlDataAdapter(sql, con);
                        sda.Fill(dt);
                    }
                    catch (Exception ex)
                    {
                        throw ex;
                    }
                    return dt;
                }
            }
            /// <summary>
            ///  查询操作,返回一个数据表,存储过程
            /// </summary>
            /// <param name="sp_Name">存储过程名称</param>
            /// <param name="paras">存储过程參数</param>
            /// <returns></returns>
            public static DataTable GetDateTable(String sql, MySqlParameter[] paras)
            {
                using (MySqlConnection con = getConn())
                {
                    DataTable dt = new DataTable();
                    try
                    {
                        MySqlCommand com = new MySqlCommand(sql, con);
                        com.Parameters.AddRange(paras);
                        MySqlDataAdapter sda = new MySqlDataAdapter(com);
                        sda.Fill(dt);
                    }
                    catch (Exception ex)
                    {
                        throw ex;
                    }
                    return dt;
                }
            }
    
    
    
        }
    
        /// <summary>
        /// DataTable与实体类互相转换
        /// </summary>
        /// <typeparam name="T">实体类</typeparam>
        public class DatatableFill<T> where T : new()
        {
            #region DataTable转换成实体类
            /// <summary>
            /// 填充对象列表:用DataSet的第一个表填充实体类
            /// </summary>
            /// <param name="ds">DataSet</param>
            /// <returns></returns>
            public List<T> FillModel(DataSet ds)
            {
                if (ds == null || ds.Tables[0] == null || ds.Tables[0].Rows.Count == 0)
                {
                    return new List<T>();
                }
                else
                {
                    return FillModel(ds.Tables[0]);
                }
            }
    
            /// <summary>  
            /// 填充对象列表:用DataSet的第index个表填充实体类
            /// </summary>  
            public List<T> FillModel(DataSet ds, int index)
            {
                if (ds == null || ds.Tables.Count <= index || ds.Tables[index].Rows.Count == 0)
                {
                    return new List<T>() ;
                }
                else
                {
                    return FillModel(ds.Tables[index]);
                }
            }
    
    
    
            /// <summary>  
            /// 填充对象列表:用DataTable填充实体类
            /// </summary>  
            public List<T> FillModel(DataTable dt)
            {
                if (dt == null || dt.Rows.Count == 0)
                {
                    return new List<T>();
                }
                List<T> modelList = new List<T>();
                foreach (DataRow dr in dt.Rows)
                {
                    //T model = (T)Activator.CreateInstance(typeof(T));  
                    T model = new T();
                    for (int i = 0; i < dr.Table.Columns.Count; i++)
                    {
                        PropertyInfo propertyInfo = model.GetType().GetProperty(ToSplitFirstUpper(dr.Table.Columns[i].ColumnName));
                        if (propertyInfo != null && dr[i] != DBNull.Value)
                            propertyInfo.SetValue(model, dr[i], null);
                    }
    
                    modelList.Add(model);
                }
                return modelList;
            }
    
            /// <summary>  
            /// 填充对象:用DataRow填充实体类
            /// </summary>  
            public T FillModel(DataRow dr)
            {
                if (dr == null)
                {
                    return default(T);
                }
    
                //T model = (T)Activator.CreateInstance(typeof(T));  
                T model = new T();
    
                for (int i = 0; i < dr.Table.Columns.Count; i++)
                {
                    PropertyInfo propertyInfo = model.GetType().GetProperty(ToSplitFirstUpper(dr.Table.Columns[i].ColumnName));
                    if (propertyInfo != null && dr[i] != DBNull.Value)
                        propertyInfo.SetValue(model, dr[i], null);
                }
                return model;
            }
    
            // 去下划线,转大写
            public static string ToSplitFirstUpper(string file)
            {
                string[] words = file.Split('_');
                StringBuilder firstUpperWorld = new StringBuilder();
                foreach (string word in words)
                {
                    string firstUpper = ToFirstUpper(word);
                    firstUpperWorld.Append(firstUpper);
                }
                string firstUpperFile = firstUpperWorld.ToString().TrimEnd(new char[] { '_' });
                return firstUpperFile;
            }
    
            // 将字符串设置成首字母大写
            public static string ToFirstUpper(string field)
            {
                string first = field.Substring(0, 1).ToUpperInvariant();
                string result = first;
                if (field.Length > 1)
                {
                    string after = field.Substring(1);
                    result = first + after;
                }
                return result;
            }
            #endregion
    
            #region 实体类转换成DataTable
    
            /// <summary>
            /// 实体类转换成DataSet
            /// </summary>
            /// <param name="modelList">实体类列表</param>
            /// <returns></returns>
            public DataSet FillDataSet(List<T> modelList)
            {
                if (modelList == null || modelList.Count == 0)
                {
                    return null;
                }
                else
                {
                    DataSet ds = new DataSet();
                    ds.Tables.Add(FillDataTable(modelList));
                    return ds;
                }
            }
    
            /// <summary>
            /// 实体类转换成DataTable
            /// </summary>
            /// <param name="modelList">实体类列表</param>
            /// <returns></returns>
            public DataTable FillDataTable(List<T> modelList)
            {
                if (modelList == null || modelList.Count == 0)
                {
                    return null;
                }
                DataTable dt = CreateData(modelList[0]);
    
                foreach (T model in modelList)
                {
                    DataRow dataRow = dt.NewRow();
                    foreach (PropertyInfo propertyInfo in typeof(T).GetProperties())
                    {
                        dataRow[propertyInfo.Name] = propertyInfo.GetValue(model, null);
                    }
                    dt.Rows.Add(dataRow);
                }
                return dt;
            }
    
            /// <summary>
            /// 依据实体类得到表结构
            /// </summary>
            /// <param name="model">实体类</param>
            /// <returns></returns>
            private DataTable CreateData(T model)
            {
                DataTable dataTable = new DataTable(typeof(T).Name);
                foreach (PropertyInfo propertyInfo in typeof(T).GetProperties())
                {
                    dataTable.Columns.Add(new DataColumn(propertyInfo.Name, propertyInfo.PropertyType));
                }
                return dataTable;
            }
    
            #endregion
        }
    }


    再家一个基本的T4文件,命名为 Entity.tt

    <#@ include file="$(ProjectDir)Entity/DbHelper.ttinclude"#>
    using System;
    using MySql.Data.MySqlClient;
    using System.Data;
    using System.Collections.Generic;
    namespace ToolSite.Entity
    {
    	public class Config
    	{
    		public static string DefaultDb = "<#=config.DbDatabase#>";
    		public static string ConnStr = "<#=config.ConnectionString#>";
    	}
    		
    <#foreach(var table in DbHelper.GetDbTables(config.ConnectionString, config.DbDatabase)){#>
    <# string tableName = DbHelper.ToSplitFirstUpper(table.TableName); #>
    	public partial class <#=tableName#>
        {
    		#region Field
    <# foreach(DbColumn column in DbHelper.GetDbColumns(config.ConnectionString, config.DbDatabase, table.TableName)){#>
    		/// <summary>
            /// <#= column.Comment#>
            /// </summary>
    		public <#= column.CSharpType#> <#=DbHelper.ToSplitFirstUpper(column.Field)#> { get; set; }
    <#}#>		#endregion
    
    		public int Save()
    		{
    			<#=DbHelper.GetParameter(config.ConnectionString, config.DbDatabase, table.TableName, false)#>
    			string sql = "<#=DbHelper.GetInsertSql(config.ConnectionString, config.DbDatabase, table.TableName)#>";
    		return DBHelper.NoneQuery(sql, paras);
    		}
    		
    		public int Update()
            {
    
                <#=DbHelper.GetParameter(config.ConnectionString, config.DbDatabase, table.TableName, true)#>
    			string sql = "<#=DbHelper.GetUpdateSql(config.ConnectionString, config.DbDatabase, table.TableName)#>";
                return DBHelper.NoneQuery(sql, paras);
    
            }
    
    		public static int Delete(int id)
            {
                string sql = string.Format("DELETE FROM <#=table.TableName#> WHERE id = {0}", id);
                return DBHelper.NoneQuery(sql);
    
            }
    
    		public static <#=tableName#> GetById(int id)
            {
                string sql = string.Format("SELECT * FROM <#=table.TableName#> WHERE id = {0}", id);
                DataTable table = DBHelper.GetDateTable(sql);
    			List<<#=tableName#>> list = new DatatableFill<<#=tableName#>>().FillModel(table);
                //List<<#=tableName#>> list = Mapper.DynamicMap<IDataReader, List<<#=tableName#>>>(table.CreateDataReader());
                if (list == null || list.Count == 0) return null;
                return list[0];
            }
    
    		public static List<<#=tableName#>> GetList()
            {
                string sql = "SELECT * FROM <#=table.TableName#>";
                DataTable table = DBHelper.GetDateTable(sql);
    			List<<#=tableName#>> list = new DatatableFill<<#=tableName#>>().FillModel(table);
                //List<<#=tableName#>> list = Mapper.DynamicMap<IDataReader, List<<#=tableName#>>>(table.CreateDataReader());
                return list;
    
            }
    
    		public static List<<#=tableName#>> Find(string where)
            {
                string sql = string.Format("SELECT * FROM <#=table.TableName#> WHERE {0};", where);
                DataTable table = DBHelper.GetDateTable(sql);
                return new DatatableFill<<#=tableName#>>().FillModel(table);
            }
    
            public static List<<#=tableName#>> Find(string field, string prop)
            {
                return Find(string.Format(" {0} = '{1}' ", field, prop));
    
            }
    
            public static bool Exist(string field, string prop)
            {
                int n = Count(field, prop);
                return n > 0 ? true : false;
            }
    
            public static int Count(string where)
            {
                string sql = string.Format("SELECT COUNT(1) FROM <#=table.TableName#> WHERE {0}", where);
                DataTable table = DBHelper.GetDateTable(sql);
                return Convert.ToInt32(table.Rows[0][0]);
            }
    
            public static int Count(string field, string prop)
            {
                return Count(string.Format(" {0} = '{1}' ", field, prop));
            }
    
            public static int Count()
            {
                return Count(" 1 = 1 ");
            }
    
            public static List<<#=tableName#>> Find(int index, int size, ref int count)
            {
                count = Count(" 1 = 1 ");
                string sql = string.Format(" 1 = 1 Order by id desc  LIMIT {0}, {1} ", index * size , size);
                return Find(sql);
            }
    
            public static List<<#=tableName#>> Find(string field, string prop, int index, int size, ref int count)
            {
                count = Count(field, prop);
                string sql = string.Format(" {0} = {1} Order by id desc LIMIT {2}, {3} ", field, prop, index, size);
                return Find(sql);
            }
        }
    
    <#}#>
    }
    
    <#+
    	class config
        {
            public static readonly string ConnectionString = "Server=127.0.0.1;Database=toolsite;Uid=root;Pwd=root;";
            public static readonly string DbDatabase = "toolsite";
        }
    #>
    


    你须要改的是最后那个文件的这个位置

        class config
        {
            public static readonly string ConnectionString = "Server=127.0.0.1;Database=toolsite;Uid=root;Pwd=root;";
            public static readonly string DbDatabase = "toolsite";
        }

    怎么改我相信你懂的,点击下保存,你的实体类,跟数据库操作就生成了

    最后生成的代码是这样子的,还是蛮粗糙的,假设你愿意改改,我相信会更好的!!!

    using System;
    using MySql.Data.MySqlClient;
    using System.Data;
    using System.Collections.Generic;
    namespace ToolSite.Entity
    {
    	public class Config
    	{
    		public static string DefaultDb = "toolsite";
    		public static string ConnStr = "Server=127.0.0.1;Database=toolsite;Uid=root;Pwd=root;";
    	}
    		
    	public partial class PageInfo
        {
    		#region Field
    		/// <summary>
            /// 
            /// </summary>
    		public int Id { get; set; }
    		/// <summary>
            /// 
            /// </summary>
    		public int SiteId { get; set; }
    		/// <summary>
            /// 
            /// </summary>
    		public int ParentId { get; set; }
    		/// <summary>
            /// 
            /// </summary>
    		public string FileName { get; set; }
    		/// <summary>
            /// 
            /// </summary>
    		public string Content { get; set; }
    		/// <summary>
            /// 
            /// </summary>
    		public string Title { get; set; }
    		/// <summary>
            /// 
            /// </summary>
    		public string Keywords { get; set; }
    		/// <summary>
            /// 
            /// </summary>
    		public string Description { get; set; }
    		/// <summary>
            /// 
            /// </summary>
    		public string H1 { get; set; }
    		#endregion
    
    		public int Save()
    		{
    			MySqlParameter[] paras = new MySqlParameter[] { 
    				 new MySqlParameter("site_id", this.SiteId),
    				 new MySqlParameter("parent_id", this.ParentId),
    				 new MySqlParameter("file_name", this.FileName),
    				 new MySqlParameter("content", this.Content),
    				 new MySqlParameter("title", this.Title),
    				 new MySqlParameter("keywords", this.Keywords),
    				 new MySqlParameter("description", this.Description),
    				 new MySqlParameter("h1", this.H1)
    			};
    
    			string sql = "INSERT INTO page_info(site_id, parent_id, file_name, content, title, keywords, description, h1) VALUES(?site_id, ?parent_id, ?file_name, ?content, ?title, ?keywords, ?description, ?h1)";
    		return DBHelper.NoneQuery(sql, paras);
    		}
    		
    		public int Update()
            {
    
                MySqlParameter[] paras = new MySqlParameter[] { 
    				 new MySqlParameter("id", this.Id),
    				 new MySqlParameter("site_id", this.SiteId),
    				 new MySqlParameter("parent_id", this.ParentId),
    				 new MySqlParameter("file_name", this.FileName),
    				 new MySqlParameter("content", this.Content),
    				 new MySqlParameter("title", this.Title),
    				 new MySqlParameter("keywords", this.Keywords),
    				 new MySqlParameter("description", this.Description),
    				 new MySqlParameter("h1", this.H1)
    			};
    
    			string sql = "UPDATE page_info SET site_id = ?site_id, parent_id = ?parent_id, file_name = ?file_name, content = ?content, title = ?title, keywords = ?keywords, description = ?description, h1 = ?h1 WHERE id = ?id";
                return DBHelper.NoneQuery(sql, paras);
    
            }
    
    		public static int Delete(int id)
            {
                string sql = string.Format("DELETE FROM page_info WHERE id = {0}", id);
                return DBHelper.NoneQuery(sql);
    
            }
    
    		public static PageInfo GetById(int id)
            {
                string sql = string.Format("SELECT * FROM page_info WHERE id = {0}", id);
                DataTable table = DBHelper.GetDateTable(sql);
    			List<PageInfo> list = new DatatableFill<PageInfo>().FillModel(table);
                //List<PageInfo> list = Mapper.DynamicMap<IDataReader, List<PageInfo>>(table.CreateDataReader());
                if (list == null || list.Count == 0) return null;
                return list[0];
            }
    
    		public static List<PageInfo> GetList()
            {
                string sql = "SELECT * FROM page_info";
                DataTable table = DBHelper.GetDateTable(sql);
    			List<PageInfo> list = new DatatableFill<PageInfo>().FillModel(table);
                //List<PageInfo> list = Mapper.DynamicMap<IDataReader, List<PageInfo>>(table.CreateDataReader());
                return list;
    
            }
    
    		public static List<PageInfo> Find(string where)
            {
                string sql = string.Format("SELECT * FROM page_info WHERE {0};", where);
                DataTable table = DBHelper.GetDateTable(sql);
                return new DatatableFill<PageInfo>().FillModel(table);
            }
    
            public static List<PageInfo> Find(string field, string prop)
            {
                return Find(string.Format(" {0} = '{1}' ", field, prop));
    
            }
    
            public static bool Exist(string field, string prop)
            {
                int n = Count(field, prop);
                return n > 0 ? true : false;
            }
    
            public static int Count(string where)
            {
                string sql = string.Format("SELECT COUNT(1) FROM page_info WHERE {0}", where);
                DataTable table = DBHelper.GetDateTable(sql);
                return Convert.ToInt32(table.Rows[0][0]);
            }
    
            public static int Count(string field, string prop)
            {
                return Count(string.Format(" {0} = '{1}' ", field, prop));
            }
    
            public static int Count()
            {
                return Count(" 1 = 1 ");
            }
    
            public static List<PageInfo> Find(int index, int size, ref int count)
            {
                count = Count(" 1 = 1 ");
                string sql = string.Format(" 1 = 1 Order by id desc  LIMIT {0}, {1} ", index * size , size);
                return Find(sql);
            }
    
            public static List<PageInfo> Find(string field, string prop, int index, int size, ref int count)
            {
                count = Count(field, prop);
                string sql = string.Format(" {0} = {1} Order by id desc LIMIT {2}, {3} ", field, prop, index, size);
                return Find(sql);
            }
        }
    
    	public partial class SiteInfo
        {
    		#region Field
    		/// <summary>
            /// 
            /// </summary>
    		public int Id { get; set; }
    		/// <summary>
            /// 
            /// </summary>
    		public string Name { get; set; }
    		/// <summary>
            /// 
            /// </summary>
    		public string Template { get; set; }
    		#endregion
    
    		public int Save()
    		{
    			MySqlParameter[] paras = new MySqlParameter[] { 
    				 new MySqlParameter("name", this.Name),
    				 new MySqlParameter("template", this.Template)
    			};
    
    			string sql = "INSERT INTO site_info(name, template) VALUES(?name, ?template)";
    		return DBHelper.NoneQuery(sql, paras);
    		}
    		
    		public int Update()
            {
    
                MySqlParameter[] paras = new MySqlParameter[] { 
    				 new MySqlParameter("id", this.Id),
    				 new MySqlParameter("name", this.Name),
    				 new MySqlParameter("template", this.Template)
    			};
    
    			string sql = "UPDATE site_info SET name = ?name, template = ?template WHERE id = ?id";
                return DBHelper.NoneQuery(sql, paras);
    
            }
    
    		public static int Delete(int id)
            {
                string sql = string.Format("DELETE FROM site_info WHERE id = {0}", id);
                return DBHelper.NoneQuery(sql);
    
            }
    
    		public static SiteInfo GetById(int id)
            {
                string sql = string.Format("SELECT * FROM site_info WHERE id = {0}", id);
                DataTable table = DBHelper.GetDateTable(sql);
    			List<SiteInfo> list = new DatatableFill<SiteInfo>().FillModel(table);
                //List<SiteInfo> list = Mapper.DynamicMap<IDataReader, List<SiteInfo>>(table.CreateDataReader());
                if (list == null || list.Count == 0) return null;
                return list[0];
            }
    
    		public static List<SiteInfo> GetList()
            {
                string sql = "SELECT * FROM site_info";
                DataTable table = DBHelper.GetDateTable(sql);
    			List<SiteInfo> list = new DatatableFill<SiteInfo>().FillModel(table);
                //List<SiteInfo> list = Mapper.DynamicMap<IDataReader, List<SiteInfo>>(table.CreateDataReader());
                return list;
    
            }
    
    		public static List<SiteInfo> Find(string where)
            {
                string sql = string.Format("SELECT * FROM site_info WHERE {0};", where);
                DataTable table = DBHelper.GetDateTable(sql);
                return new DatatableFill<SiteInfo>().FillModel(table);
            }
    
            public static List<SiteInfo> Find(string field, string prop)
            {
                return Find(string.Format(" {0} = '{1}' ", field, prop));
    
            }
    
            public static bool Exist(string field, string prop)
            {
                int n = Count(field, prop);
                return n > 0 ? true : false;
            }
    
            public static int Count(string where)
            {
                string sql = string.Format("SELECT COUNT(1) FROM site_info WHERE {0}", where);
                DataTable table = DBHelper.GetDateTable(sql);
                return Convert.ToInt32(table.Rows[0][0]);
            }
    
            public static int Count(string field, string prop)
            {
                return Count(string.Format(" {0} = '{1}' ", field, prop));
            }
    
            public static int Count()
            {
                return Count(" 1 = 1 ");
            }
    
            public static List<SiteInfo> Find(int index, int size, ref int count)
            {
                count = Count(" 1 = 1 ");
                string sql = string.Format(" 1 = 1 Order by id desc  LIMIT {0}, {1} ", index * size , size);
                return Find(sql);
            }
    
            public static List<SiteInfo> Find(string field, string prop, int index, int size, ref int count)
            {
                count = Count(field, prop);
                string sql = string.Format(" {0} = {1} Order by id desc LIMIT {2}, {3} ", field, prop, index, size);
                return Find(sql);
            }
        }
    
    }
    


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  • 原文地址:https://www.cnblogs.com/hrhguanli/p/3776186.html
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