EF6 根据数据库字段说明，生成字段注释

1、第一步: 在Model.tt文件添加一个方法读取数据库中的字段说明

　　找到public string Property(EdmProperty edmProperty)这个方法，添加到这个方法下面

 

    public string GetRemark(EdmProperty edmProperty){  
        //System.Diagnostics.Debugger.Launch();  
        var tableName = edmProperty.DeclaringType.Name;  
        var colName=_code.Escape(edmProperty);  
        //System.Diagnostics.Debugger.Break();  
        string sql = string.Format(@"SELECT  字段说明=isnull(props.[value],'')  FROM syscolumns cols  inner join sysobjects objs on cols.id= objs.id and  objs.xtype='U' and  objs.name<>'dtproperties'  left join sys.extended_properties props on cols.id=props.major_id and cols.colid=props.minor_id  where  objs.name='{0}' and cols.name='{1}'",tableName,colName);  
        string sqlcon = "Data Source=192.168.1.18;User ID=sa;Password=admin-tyt0820;Initial Catalog=SLIM";  
        object remark=new object();  
        using(System.Data.SqlClient.SqlConnection conn = new System.Data.SqlClient.SqlConnection(sqlcon)){  
            conn.Open();  
            System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(sql, conn);  
            remark =cmd.ExecuteScalar();   
		} 
		return remark+"";  
    }

　　第二步、修改如下

<#
    }
 
    var simpleProperties = typeMapper.GetSimpleProperties(entity);
    if (simpleProperties.Any())
    {
        foreach (var edmProperty in simpleProperties)
        {
		//实体属性开始
#>
 
	/// <summary>
	/// <#=codeStringGenerator.GetRemark(edmProperty)#>
	/// </summary>
    <#=codeStringGenerator.Property(edmProperty)#>
 
<#
		//实体属性结束
        }
    }
 
    if (complexProperties.Any())
    {
#>

 

第三步：保存模板，就可以看到实体字段注释