关于JSON的更多介绍,请各位自行google了解!如果要我写的话,我也是去Google后copy!嘿嘿,一直以来很想学习json,大量的找资料和写demo,总算有点了解! 切入正题!
  还是先封装一个类吧! 这个类网上都可以找到的!有个这个类,一切都将变得简单了,哈哈。
  using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Web;
  using System.Runtime.Serialization.Json;
  using System.ServiceModel.Web;///记得引用这个命名空间
  using System.IO;
  using System.Text;
  /// <summary>
  /// Summary description for JsonHelper
  /// </summary>
  public class JsonHelper
  {
  public JsonHelper()
  {
  //
  // TODO: Add constructor logic here
  //
  }
  /// <summary>
  /// 把对象序列化 JSON 字符串
  /// </summary>
  /// <typeparam name="T">对象类型</typeparam>
  /// <param name="obj">对象实体</param>
  /// <returns>JSON字符串</returns>
  public static string GetJson<T>(T obj)
  {
  //记住 添加引用 System.ServiceModel.Web
  /**
  * 如果不添加上面的引用,System.Runtime.Serialization.Json; Json是出不来的哦
  * */
  DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(T));
  using (MemoryStream ms = new MemoryStream())
  {
  json.WriteObject(ms, obj);
  string szJson = Encoding.UTF8.GetString(ms.ToArray());
  return szJson;
  }
  }
  /// <summary>
  /// 把JSON字符串还原为对象
  /// </summary>
  /// <typeparam name="T">对象类型</typeparam>
  /// <param name="szJson">JSON字符串</param>
  /// <returns>对象实体</returns>
  public static T ParseFormJson<T>(string szJson)
  {
  T obj = Activator.CreateInstance<T>();
  using (MemoryStream ms = new MemoryStream (Encoding.UTF8.GetBytes(szJson)))
  {
  DataContractJsonSerializer dcj = new DataContractJsonSerializer(typeof(T));
  return (T)dcj.ReadObject(ms);
  }
  }
  }
  测试实体类:
  public class TestData
  {
  public TestData()
  {
  }
  public int Id { get; set; }
  public string Name { get; set; }
  public string Sex { get; set; }
  }
  测试页面:
  <%@ Page Language="C#" %>
  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  <script runat="server">
  protected void Page_Load(object sender, EventArgs e)
  {
  string jsonStr = string.Empty;
  List<TestData> tds = new List<TestData>();
  //测试数据
  for (int i = 1; i < 4; i++)
  {
  tds.Add(new TestData() { Id = i, Name = "jinho" + i, Sex = "male" });
  }    //把一个list转换为json字符串
  jsonStr = JsonHelper.GetJson<List<TestData>>(tds);
  Response.Write(jsonStr);
  this.Page.ClientScript.RegisterStartupScript(this.GetType(), "json", "getJson(" + jsonStr + ");", true);
  }
  </script>
  <script type="text/javascript">
  function getJson(jsonStr) {    //使用eval函数
  var json = eval(jsonStr);     //因为上面为list集合
  for (var i = 0; i < json.length; i++) {
  alert(json[i].Id + "Name:" + json[i].Name);
  }
  }
  </script>
  <html xmlns="http://www.w3.org/1999/xhtml">
  <head runat="server">
  <title></title>
  </head>
  <body>
  <form id="form1" runat="server">
  <div>
  </div>
  </form>
  </body>
  </html>
  关于json字符串转换为实体请各位自己测试吧!只要有上面那个JsonHelper 类,一切都好办!