aspx页面
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN""http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html http://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
<script type="text/javascript">
function show(ob)
{
var str="测试"; PageMethods.Hello(str,funReady,funError); //这里既调用后台方法，hello既后台方法，一个参数传递的值，第二个为成功的回调函数，第三个为发生错误的回调函数
}
function funReady(result){
var outhtml="<table>";
for(var i=0;i<result.length;i++)
{
outhtml+="<tr>";
outhtml+="<td>"+result+"</td>";
outhtml+="</tr>"
}
document.getElementById('change').outerHTML=outhtml;
}
// err 就是后台方法返回的错误信息
function funError(err){
alert("Error:"+ err._message );
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true"/>//这个属性也是关键
<div id="change">
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="Button1" runat="server" Text="Button" onmouseOver="show()"/>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>
后置代码：
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.Collections.Generic;
using System.Collections;
publicpartialclass _Default : System.Web.UI.Page
{
protectedvoid Page_Load(object sender, EventArgs e)
{
}
[System.Web.Services.WebMethod]//方法需要加上的特性
// 注意，要让前台调用的方法，一定要是public和static的
publicstatic List<string> Hello(string name)
{
List<string> list=new List<string>();
list.Add("111");
list.Add("2222");
list.Add("2333");
return list;
}
}