SqlCommandBuilder 的使用实例

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Collections.Generic;

namespace DataContrast
{
public partial class SQLCommandBuilder_Demo : System.Web.UI.Page
{
protected void Page_Load( object sender, EventArgs e )
{
SqlConnection conn = new SqlConnection( "Data Source=zhengchenhan;Initial Catalog=zchtest;Integrated Security=True" );

//这里一定要把ID也select进去因为这个是这个表的主键，SELECT的结果保存成了一个表放在服务器上而不是连到数据库
SqlDataAdapter adpter = new SqlDataAdapter( "select Id,Name,Pwd from Users", conn );

//建立SqlCommandBuilder 用于执行SQL语句
SqlCommandBuilder cmdbuilder = new SqlCommandBuilder( adpter );
DataSet DS = new DataSet();

adpter.Fill( DS, "Users" );//这里的Users不是指数据库中的表名，是指DS中药创建的填充数据的DataTable对象名称
Response.Write( "修改前" + DS.Tables["Users"].Rows[4]["Name"] + "ID" + DS.Tables["Users"].Rows[4]["Id"] );

DS.Tables["Users"].Rows[4]["Name"] = "gfds";
adpter.Update( DS, "Users" ); //没有select的话这里就要报错了
Response.Write( "修改后" + DS.Tables["Users"].Rows[4]["Name"] );
conn.Close();
}

}
}