//作者：崔宏宇
//时间：2007-06-06
//说明：用AjaxPro.2.dll框架
Web.Config中配置
<?xml version="1.0"?>
<!--
Note: As an alternative to hand editing this file you can use the
web admin tool to configure settings for your application. Use
the Website->Asp.Net Configuration option in Visual Studio.
A full list of settings and comments can be found in
machine.config.comments usually located in
\Windows\Microsoft.Net\Framework\v2.x\Config
-->
<configuration>
<appSettings/>
<connectionStrings>
</connectionStrings>
<system.web>
<httpRuntime maxRequestLength="10240" executionTimeout="600"/>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.
-->
<compilation debug="true"/>
<!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
-->
<authentication mode="Windows"/>
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.
<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
-->
<httpHandlers>
<add verb="GET" path="CrystalImageHandler.aspx" type="CrystalDecisions.Web.CrystalImageHandler, CrystalDecisions.Web, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
</httpHandlers>
</system.web>
<location path="ajaxpro">
<system.web>
<httpHandlers>
<add verb="*" path="*.ashx" type="AjaxPro.AjaxHandlerFactory,AjaxPro.2"/>
</httpHandlers>
<!--
If you need to have Ajax.NET Professional methods running on the
login page you may have to enable your own authorization configuration
here.
-->
<!--
<authorization>
<deny users="?"/>
</authorization>
-->
</system.web>
</location>
</configuration>
前台代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Example.aspx.cs" Inherits="Example" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
<script language="javascript">
function Getsting()
{
debugger;
var DropDownList1= document.getElementById("DropDownList1");
var DropDownList2= document.getElementById("DropDownList2");
var ExampleDT=Example.MyLight(DropDownList1.value);
//删除DropDownList2
DropDownList2.options.length=0;
for(var i = 0; i < ExampleDT.value.Rows.length; i++)
{
DropDownList2.options.add(new Option(ExampleDT.value.Rows[i]["one"],ExampleDT.value.Rows[i]["two"]));
DropDownList2.selectedIndex=0;
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="DropDownList1" runat="server" onchange="Getsting()">
<asp:ListItem Value="1">第一</asp:ListItem>
<asp:ListItem Value="2">第二</asp:ListItem>
</asp:DropDownList>
<asp:DropDownList ID="DropDownList2" runat="server">
</asp:DropDownList>
</div>
</form>
</body>
</html>
后台代码：
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;
public partial class Example : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
AjaxPro.Utility.RegisterTypeForAjax(typeof(Example));
}
[AjaxPro.AjaxMethod]
public DataTable MyLight(string Mycondition)
{
DataTable dt = new DataTable();
dt.Columns.Add("one");//添加一列，想加几列再自己加
dt.Columns.Add("two");
DataRow dr;
if (Mycondition == "1")
{
for (int i = 0; i < 10; i++)//每列添多少行，条件自己加
{
dr = dt.NewRow();
dr["one"] = "" + i + "第一列";
dr["two"] = "" + i + "第二列";
dt.Rows.Add(dr);//添加一行
}
}
else if (Mycondition == "2")
{
for (int i = 0; i < 10; i++)//每列添多少行，条件自己加
{
dr = dt.NewRow();
dr["one"] = "" + i + "换第一列";
dr["two"] = "" + i + "换第二列";
dt.Rows.Add(dr);//添加一行
}
}
return dt;
}
}