using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Net;

 using System.Windows;

 using System.Windows.Controls;

 using System.Windows.Documents;

 using System.Windows.Input;

 using System.Windows.Media;

 using System.Windows.Media.Animation;

 using System.Windows.Shapes;

 using System.IO;

 using System.Text;

 using System.Runtime.Serialization.Json;

 namespace SilverlightApplication2

 {

     public partial class MainPage : UserControl

     {

         public MainPage()

         {

             InitializeComponent();

         }

         private void button1_Click(object sender, RoutedEventArgs e)

         {

             //textBox1.Text = "test button";

             List<TestJson> list = new List<TestJson>(){

             new TestJson(){ Id=,Name="test1"},

             new TestJson(){ Id=,Name="test2"},

             new TestJson(){ Id=,Name="test3"},

             new TestJson(){ Id=,Name="test4"}

             };

             string json = JsonHelp.JsonSerializer<List<TestJson>>(list);

             MessageBox.Show(json);

             var result = JsonHelp.JsonDeSerializer<List<TestJson>>(json);

             var resultJson = result.FirstOrDefault();

             MessageBox.Show(string.Format("id={0},name={1}", resultJson.Id, resultJson.Name));

         }

     }

     public class TestJson

     {

         public int Id { get; set; }

         public string Name { get; set; }

     }

     public class JsonHelp

     {

         /// <summary>

         /// json序列化

         /// </summary>

         /// <typeparam name="T"></typeparam>

         /// <param name="t"></param>

         /// <returns></returns>

         public static string JsonSerializer<T>(T t) where T : class

         {

             DataContractJsonSerializer dcs = new DataContractJsonSerializer(typeof(T));

             using (MemoryStream ms = new MemoryStream())

             {

                 dcs.WriteObject(ms, t);

                 byte[] bs = ms.ToArray();

                 string jsonStr = Encoding.UTF8.GetString(bs, , bs.Length);

                 return jsonStr;

             }

         }

         /// <summary>

         /// json反序列化

         /// </summary>

         /// <typeparam name="T"></typeparam>

         /// <param name="jsonStr"></param>

         /// <returns></returns>

         public static T JsonDeSerializer<T>(string jsonStr) where T : class

         {

             DataContractJsonSerializer dcs = new DataContractJsonSerializer(typeof(T));

             using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonStr)))

             {

                 return dcs.ReadObject(ms) as T;

             }

         }

     }

 }