ASP.NET(AJAX+JSON)实现对象调用

客户端:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ASP.NETA_JAX.aspx.cs" Inherits="_Default" %> 
  <!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> 
  <script type="text/jscript"> 
  function CallServer() { 
  //JSON发送对象 
  ServerSum("{name:'linyijia',age:'21'}"); 
  } 
  function GetRegister(rg, contex) { 
  document.getElementById("TxtRegister").value=rg; 
  } 
  </script> 
  </head> 
  <body> 
  <form id="form1" runat="server"> 
  <div> 
  <br /> 
  用户名:<input id="TxtNum1" type="text" /> 
  <br /> 
  服务器:<input id="TxtRegister" type="text" /><br /> 
  <button id="SumBtn" type="button" onclick="CallServer()">登录</button> 
  </div> 
  </form> 
  </body> 
  </html>
服务器:
using System; 
  using System.Collections.Generic; 
  using System.Linq; 
  using System.Web; 
  using System.Web.UI; 
  using System.Web.UI.WebControls; 
  using System.Web.Script.Serialization; 
  public partial class _Default : System.Web.UI.Page ,ICallbackEventHandler 
  { 
  Users u = null; 
  protected void Page_Load(object sender, EventArgs e) 
  { 
  //回调GetRegister方法 
  string CallBackFun = Page.ClientScript.GetCallbackEventReference(this,"arg","GetRegister","context"); 
  //创建ServerSum方法,在客户端调用的时候就,会回调GetRegister方法,把参数传给RaiseCallbackEvent(string eventArgument ),最后通过 
  //GetCallbackResult()方法把返回值传给客户端 
  string RegisterFun = string.Format("function ServerSum(arg,context){{{0};}}",CallBackFun); 
  Page.ClientScript.RegisterClientScriptBlock(this.GetType(),"ServerSum",RegisterFun,true); 
  } 
  string mssage = string.Empty; 
  #region ICallbackEventHandler 成员 
  public string GetCallbackResult() 
  { 
  return "服务器:你好,你的用户名为:" + u.Name + "你的年龄为" + u.Age; 
  } 
  public void RaiseCallbackEvent(string eventArgument) 
  { 
  JavaScriptSerializer js = new JavaScriptSerializer(); 
  u =js.Deserialize<Users>(eventArgument); 
  } 
  #endregion 
  }
Users类
using System; 
  using System.Collections.Generic; 
  using System.Linq; 
  using System.Web; 
  /// <summary> 
  ///User 的摘要说明 
  /// </summary> 
  public class Users 
  { 
  string name; 
  public string Name 
  { 
  get { return name; } 
  set { name = value; } 
  } 
  string age; 
  public string Age 
  { 
  get { return age; } 
  set { age = value; } 
  } 
  }
原理: 使用JSON向服务器发送一个对象,服务器通过实现 ICallbackEventHandler接口后,重写GetCallbackResult和RaiseCallbackEvent方法,在回调的时候,在RaiseCallbackEvent方法 中反序列化JSON,并在GetCallbackResult把结果返回给客户端.具体的我以后有空再补充,欢迎大家讨论!