<%
@ 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 xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>Untitled Page</title> <script>
function callToServer()
{ var param = document.getElementById("txtMessage").value; var context = "";<% = blientScript %> 
}function handleResultFromServer(result, context){ document.getElementById("txtResult").value = result;}
</script></head><body> <form id="form1" runat="server"> <div> <INPUT id="txtMessage" /><INPUT onclick="callToServer();" type="button" value="Call to Server" id="Button1" />Result : <INPUT id="txtResult" /> </div> </form></body></html>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 _Default : System .Web.UI .Page , System.Web.UI.ICallbackEventHandler{ protected void Page_Load(object sender, EventArgs e) { } protected String blientScript { get { return this.ClientScript.GetCallbackEventReference(this, "param", "handleResultFromServer", "context"); } } public string RaiseCallbackEvent(string eventArgument) { return "客户端在[" + DateTime.Now.ToString() + "]传送来 [" + eventArgument + "]."; }}原来作者那个无法通过调试....应当这样...
return this.ClientScript.GetCallbackEventReference(this, "param", "handleResultFromServer", "context"); //应当这样 在 (asp.net beta2 中)//参考
http://blog.joycode.com/kaneboy/archive/2004/07/07/26914.aspx