% @ Page Language = " C# " %>
! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
script runat ="server" >
System.Data.DataView CreateDataSourceByXianhuiMeng()
{
System.Data.DataTable dt = new System.Data.DataTable();
System.Data.DataRow dr;
dt.Columns.Add( new System.Data.DataColumn( " id " , typeof (System.Int32)));
dt.Columns.Add( new System.Data.DataColumn( " 学生姓名 " , typeof (System.String)));
dt.Columns.Add( new System.Data.DataColumn( " 语文 " , typeof (System.Decimal)));
dt.Columns.Add( new System.Data.DataColumn( " 数学 " , typeof (System.Decimal)));
dt.Columns.Add( new System.Data.DataColumn( " 英语 " , typeof (System.Decimal)));
dt.Columns.Add( new System.Data.DataColumn( " 计算机 " , typeof (System.Decimal)));
for ( int i = 1 ; i 30 ; i ++ )
{
System.Random rd = new System.Random(Environment.TickCount * i); ;
dr = dt.NewRow();
dr[ 0 ] = i;
dr[ 1 ] = " 【孟子E章】 " + i.ToString();
dr[ 2 ] = System.Math.Round(rd.NextDouble() * 100 , 2 );
dr[ 3 ] = System.Math.Round(rd.NextDouble() * 100 , 2 );
dr[ 4 ] = System.Math.Round(rd.NextDouble() * 100 , 2 );
dr[ 5 ] = System.Math.Round(rd.NextDouble() * 100 , 2 );
dt.Rows.Add(dr);
}
System.Data.DataView dv = new System.Data.DataView(dt);
return dv;
}
protected void Page_Load(object sender, EventArgs e)
{
if (Request.QueryString[ " id " ] != null )
{
Response.ClearContent();
GridView1.DataSource = CreateDataSourceByXianhuiMeng();
GridView1.DataBind();
System.Text.StringBuilder sb = new System.Text.StringBuilder();
System.IO.StringWriter sw = new System.IO.StringWriter(sb);
HtmlTextWriter htw = new HtmlTextWriter(sw);
Literal header = new Literal();
header.Text = " h2>项目 " + Request.QueryString[ " id " ] + " /h2> " ;
Header.Controls.Add(header);
Header.RenderControl(htw);
GridView1.RenderControl(htw);
Response.Write( " 这里查询数据，输出结果就可以了。结果： " + sb.ToString());
Response.End();
}
}
// / 添加这个override void VerifyRenderingInServerForm(Control control)，是为了避免出现
// / 类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内。
// / 的异常
public override void VerifyRenderingInServerForm(Control control)
{ }
/ script >
html xmlns ="http://www.w3.org/1999/xhtml" >
head id ="Head1" runat ="server" >
title > 使用 AJAX，局部刷新 GridView 进行数据绑定的简单实现 / title >
script type ="text/javascript" >
function GetData(p) {
document.getElementById( " d " ).innerHTML = " 正在读取数据…… " ;
h = window.XMLHttpRequest ? new window.XMLHttpRequest() : new ActiveXObject( " MSXML2.XMLHTTP " );
h.open( " GET " , ' %=Request.FilePath %>?id= ' + p.value, true );
h.onreadystatechange = function () {
if (h.readyState == 4 ) {
if (h.status >= 200 h.status 300 ) {
document.getElementById( " d " ).innerHTML = h.responseText;
}
else {
document.getElementById( " d " ).innerHTML = " h2>数据操作错误：/h2> " + h.responseText;
}
}
}
h.send( null );
}
alert( " 这个提示，只出现在第一次打开页面。 " );
/ script >
/ head >
body >
form id ="form1" runat ="server" >
asp:GridView ID ="GridView1" runat ="server" >/ asp:GridView >
asp:Panel ID ="Header" runat ="server" >/ asp:Panel >
select onchange ="GetData(this)" >
option value ="1" > 项目一 / option >
option value ="2" > 项目二 / option >
/ select >
/ form >
div id ="d" >/ div >
/ body >
/ html >
