<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" %> <!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></title>
</head>
<body>
<form id="form1" runat="server">
<script type="text/javascript">
function getResult(arg,context) {
<%=Page.ClientScript.GetCallbackEventReference(this, "arg", "page_callback", "context", "page_error", false)%>;
} function page_callback(arg, context) {
document.getElementById("result").innerHTML = arg;
} function page_error(arg, context) {
alert("error");
}
</script>
<div id="result">
</div>
<input id="Button1" type="button" value="button" onclick="getResult(null,null)" />
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls; namespace WebApplication2
{
public partial class WebForm1 : System.Web.UI.Page, ICallbackEventHandler
{
private string result = ""; protected void Page_Load(object sender, EventArgs e)
{ } public string GetCallbackResult()
{
return result;
} public void RaiseCallbackEvent(string eventArgument)
{
result = DateTime.Now.ToString();
}
}
}