T4模板批量生成代码文件

<#@ template debug="false" hostspecific="true" language="C#" #>
<#@ assembly name="System.Data" #>
<#@ assembly name="System.xml" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.Data.SqlClient" #>
<#@ import namespace="System.Data" #>
<#@ assembly name="System.Core" #>
<#@ import namespace="System.Linq" #>
//  导入MultipleOutputHelper.ttinclude文件
<#@include file="$(SolutionDir)HClubMall.ModelT4MultipleOutputHelper.ttinclude" #> 

<# 
    var manager = Manager.Create(Host, GenerationEnvironment); 
    manager.StartHeader();
#>


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace HClubMall.Model
{   
<# manager.EndBlock(); #>

<#        
    string connectionString= "server=192.168.0.23;database=Hclub1031;uid=sa;pwd=seindotnet;";        
    SqlConnection conn = new SqlConnection(connectionString);
    conn.Open();
    
    string selectQuery ="SET FMTONLY ON; select * from @tableName; SET FMTONLY OFF;";
    SqlCommand command = new SqlCommand(selectQuery,conn);
    SqlDataAdapter ad = new SqlDataAdapter(command);
    System.Data.DataSet ds = new DataSet(); 
    System.Data.DataTable schema = conn.GetSchema("Tables");

    foreach(System.Data.DataRow row in schema.Rows)
    {    
        ds.Tables.Clear();
        string tb_name = row["TABLE_NAME"].ToString();        
        command.CommandText = selectQuery.Replace("@tableName",row["TABLE_NAME"].ToString());
        ad.FillSchema(ds,SchemaType.Mapped,tb_name);  
        manager.StartNewFile(tb_name+".cs");
#>
    [Serializable]
    /// <summary>
    /// 实体-<#=tb_name#> 
    /// </summary>
    public partial class <#=tb_name#>    
    {    
        <#
        PushIndent("          ");
        WriteLine("  #region 属性");
        foreach (DataColumn dc in ds.Tables[0].Columns) 
        {
            WriteLine("/// <summary>");
            WriteLine("/// ");
            WriteLine("/// </summary>");
            WriteLine("public " + dc.DataType.Name + (dc.AllowDBNull && (dc.DataType.Name.ToLower() != "string")&&(dc.DataType.Name.ToLower()!="byte[]") ? "? ": " ") + dc.ColumnName + " { get; set; }");
        }
        WriteLine("#endregion");
        PopIndent();
        #>
    } 
<#
        manager.EndBlock();    
    }            
    conn.Close();  
#>

<# manager.StartFooter(); #>
}
<# manager.EndBlock(); #>

<# manager.Process(true); #>

1.需要引用一个国外的批量生成代码模板MultipleOutputHelper.ttinclude

2.创建一个T4模板，复制上面的代码放到新创建的T4模板中。

3.Ctrl+S

4.效果图：

注意：

MultipleOutputHelper.ttinclude项目在桌面时会报错。