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

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