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webform1.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="work015.WebForm1" %>
               
   
    
    
        
     
                  
       
                        
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webform1.aspx.cs

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace work015{    public partial class WebForm1 : System.Web.UI.Page, ICallbackEventHandler    {        string result = "";        protected void Page_Load(object sender, EventArgs e)        {            ClientScriptManager csm = Page.ClientScript;            //参数5，true表示异步，false表示同步            string reference = csm.GetCallbackEventReference(this, "args", "Success", "", "Error", false);            string callbackScript = "function CallServerMethod(args,context) {\n" +                reference + ";\n}";            csm.RegisterClientScriptBlock(this.GetType(), "CallServerMethod", callbackScript, true);        }        public void RaiseCallbackEvent(string eventArgs)        {            if (eventArgs.ToLower().IndexOf("admin") != -1)            {                result = string.Format("{0}已被注册", eventArgs);            }            else            {                result = eventArgs + "可以注册";            }        }        public string GetCallbackResult()        {            return result;        }    }}