Json+jquery+asp.net 返回数据库数据

前台：

代码

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
    <%--<script src="js/jquery-1.3.2.js" type="text/javascript"></script>--%>
    <script src="js/jquery.js" type="text/javascript"></script>
    <script type="text/javascript" language="javascript">
        $(document).ready(function() {
        $("#btn").click(function() { 
                $.getJSON(
    "show.ashx", //产生JSON数据的服务端页面
    function(json) {
        //循环取json中的数据,并呈现在列表中
                $.each(json, function(i) {
                $("#list").append("<li>username：" + json[i].FuserName + "&nbsp; userPWD：" + json[i].FpassWord + "&nbsp; Fmail：" + json[i].Fmail + "&nbsp; Fadress：" + json[i].Fadress + "</li>")
        })
    });
            })
        }); 
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <h3 title="选择一个分区"><span>选择</span></h3>
    <input id="btn" type="button" value="获取数据"  /> 

    <ul id="list"></ul>
    </div>
    </form>
</body>
</html>

后台：

代码

<%@ WebHandler Language="C#" Class="show" %>

using System;
using System.Web;
using System.Collections.Generic;
using System.Web.Script.Serialization;//添加此引用
using DAL;
using model;

public class show : IHttpHandler {
    
    public void ProcessRequest (HttpContext context) {
        JavaScriptSerializer serializer = new JavaScriptSerializer();
        IList<Tuser> tuser = UserDB.getList();
        string dt = serializer.Serialize(tuser);
        context.Response.ContentType = "text/plain";
        context.Response.Write(dt);
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }

}