callback.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="callback.aspx.cs" Inherits="callback" %>
<!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" type="text/javascript">
// <!CDATA[
function Button1_onclick() {
var product="Test";
<%=ClientScript.GetCallbackEventReference(this, "product", "ReceiveServerData",null)%>;
}
function ReceiveServerData(rValue)
{
alert(rValue);
}
// ]]>
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="Button1" type="button" value="button" onclick="return Button1_onclick()" />
</div>
</form>
</body>
</html>
callback.aspx.cs
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class callback : System.Web.UI.Page,ICallbackEventHandler
{
private string CallBackValue = string.Empty;
protected void Page_Load(object sender, EventArgs e)
{
}
string ICallbackEventHandler.GetCallbackResult()
{
return this.CallBackValue + "ok";
}
void ICallbackEventHandler.RaiseCallbackEvent(string a)
{
this.CallBackValue = a;
}
}