c#数据源转Json格式

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原作者: [db:作者] 来自: [db:来源] 收藏邀请

学习了点东西。留个脚印。

实现效果，点击按钮，后台加载数据源，前台绑定到下拉框。

前台：


<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="JsonTrans.aspx.cs" Inherits="auotoCompleteText.JsonTrans" %>

<!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/javascript" src="jquery-1.3.2-vsdoc2.js"></script>
<script type="text/javascript">
function loadValue() {
            $.get("JsonTransHander.ashx", function(jsonData) {
debugger;
var json = eval(jsonData);
for (var i = 0; i < json.length; i++) {
//js
                    //var op = new Option(json[i].Name, json[i].ID);
                    //document.getElementById("Select1").options.add(op);

//jquery
                    $("#Select1").append("<option value='" + json[i].value + "'>" + json[i].Name + "</option>");
                }
            });
        }
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<select id="Select1">
</select>
<input type="button" value="Load" onclick="loadValue();" />
</div>
</form>
</body>
</html>

后台：

新建一个一般处理程序，命名为JsonTransHander.ashx。内容如下：


using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Script.Serialization;

namespace auotoCompleteText
{
/// <summary>
/// $codebehindclassname$ 的摘要说明
/// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class JsonTransHander : IHttpHandler
    {
public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
//初始化数据
            List<People> peopleList = new List<People>();
for (int i = 0; i < 10; i++)
            {
                People people = new People() { ID=i,Name="name"+i};
                peopleList.Add(people);
            }


//引用System.Web.Extensions  .net3.5框架
            JavaScriptSerializer serializer=new JavaScriptSerializer();
//转换
            var jsonData=   serializer.Serialize(peopleList);

//返回
            context.Response.Write(jsonData);
        }
public bool IsReusable
        {
get
            {
return false;
            }
        }
    }

public class People
    {
public string Name
        {
set;
get;
        }
public int ID
        {
set;
get;
        }
    }
}