ASP.NET(AJAX+JSON)实现对象调用

时间:2022-01-04 13:53:21
客户端: 
复制代码代码如下:

<%@ 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: 
复制代码代码如下:

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 
复制代码代码如下:

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!