手动绑定SQLDataSource到GridView后分页的问题（转）

由于GridView的数据源是后台CS文件中代码绑定的。所以程序运行时，点击分页数后没有反应。解决办法如下：

using System;
using System.Data;
using System.Configuration;
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;

public partial class _Default : System.Web.UI.Page
{
SqlDataSource source = new SqlDataSource();

protected void Page_Load(object sender, EventArgs e)
{

}

private void DBind()
{
SqlConnection conn = new SqlConnection();
conn.ConnectionString = ConfigurationManager.ConnectionStrings["TransportConnectionString"].ConnectionString;
source.ConnectionString = ConfigurationManager.ConnectionStrings["TransportConnectionString"].ConnectionString;
string sql = "SELECT * from Customer where id<>'' ";

if (this.客户名称.Text != "")
{
sql = sql + " and 客户编码 LIKE '%" + this.客户名称.Text + "%' ";
}
source.SelectCommand = sql;
GridView1.DataSourceID = "";
GridView1.DataSource = "";
GridView1.DataSource = source;
GridView1.DataBind();
}

protected void SearchButton_Click(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection();
conn.ConnectionString = ConfigurationManager.ConnectionStrings["TransportConnectionString"].ConnectionString;
source.ConnectionString = ConfigurationManager.ConnectionStrings["TransportConnectionString"].ConnectionString;
string sql = "SELECT * from Customer where id<>'' ";

if (this.客户名称.Text != "")
{
sql = sql + " and 客户编码 LIKE '%" + this.客户名称.Text + "%' ";
}
source.SelectCommand = sql;
GridView1.DataSourceID = "";
GridView1.DataSource = "";
GridView1.DataSource = source;
GridView1.DataBind();
}

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex=e.NewPageIndex;
DBind();
}
}

需要注意的是，我增加了一个方法，和绑定事件按钮是一样的。需要在PageIndexChanging事件中重新绑定数据源才可以。但是这个办法有一个问题。就是每次切换页数的时候，都会从数据库中查询全部的数据，所以效率上会有问题。看大家有什么解决办法没有？

转载自： http://delphires.blog.hexun.com/13239567_d.html