具體代碼如下：
復制代碼 代碼如下:
<% @ 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( " 學生姓名 " , typeof (System.String)));
dt.Columns.Add( new System.Data.DataColumn( " 語文 " , typeof (System.Decimal)));
dt.Columns.Add( new System.Data.DataColumn( " 數學 " , typeof (System.Decimal)));
dt.Columns.Add( new System.Data.DataColumn( " 英語 " , typeof (System.Decimal)));
dt.Columns.Add( new System.Data.DataColumn( " 計算機 " , 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>項目 " + Request.QueryString[ " id " ] + " </h2> " ;
Header.Controls.Add(header);
Header.RenderControl(htw);
GridView1.RenderControl(htw);
Response.Write( " 這裡查詢數據，輸出結果就可以了。結果： " + sb.ToString());
Response.End();
}
}
// / 添加這個override void VerifyRenderingInServerForm(Control control)，是為了避免出現
// / 類型“GridView”的控件“GridView1”必須放在具有 runat=server 的窗體標記內。
// / 的異常
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 進行數據綁定的簡單實現 </ title >
< script type ="text/javascript" >
function GetData(p) {
document.getElementById( " d " ).innerHTML = " 正在讀取數據…… " ;
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>數據操作錯誤：</h2> " + h.responseText;
}
}
}
h.send( null );
}
alert( " 這個提示，只出現在第一次打開頁面。 " );
</ 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" > 項目一 </ option >
< option value ="2" > 項目二 </ option >
</ select >
</ form >
< div id ="d" ></ div >
</ body >
</ html >
