使用System.Runtime.Serialization.Json解析Json数据

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using System.IO;

namespace testweb
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

            string jsonString = "[{\"Name\":\"燃气\",\"Code\":\"01\",\"CP\":[{\"Name\":\"大众燃气\",\"Code\":\"10\"},{\"Name\":\"市北燃气\",\"Code\":\"30\"}]},{\"Name\":\"供水\",\"Code\":\"02\",\"CP\":[{\"Name\":\"大众燃气\",\"Code\":\"10\"},{\"Name\":\"市北燃气\",\"Code\":\"30\"}]}]";

            List<PublicUtilitiesCompanies> pucs = JSON.parse<List<PublicUtilitiesCompanies>>(jsonString);
            Response.Write(pucs.Count + "<br>");

            string tname = pucs.Where(o => o.Code.Equals("02") && o.PUCS.Where(y => y.Code.Equals("10")).Count() > 0).FirstOrDefault().Name;
            Response.Write(tname);

        }
    }

    [DataContract]
    public class PublicUtilitiesCompanies
    {
        [DataMember(Order = 0, IsRequired = true)]
        public string Name { get; set; }
        [DataMember(Order = 1)]
        public string Code { get; set; }
        [DataMember(Order = 3)]
        public PublicUtilitiesCompanies[] PUCS { get; set; }
    }

    /// <summary>
    /// 解析JSON，仿Javascript风格
    /// </summary>
    public static class JSON
    {
        /*
        用法：
        // 序列化
        var jsonString = JSON.stringify(new[] { p1, p2 });
        log(jsonString == JSON.stringify(new List<Person>() { p1, p2 }));   //true
        log(jsonString);
        // 反序列化，泛型集合
        JSON.parse<List<Person>>(jsonString);
        // 数组转换
        JSON.parse<Person[]>(jsonString);
        输出：
        [{"Name":"lj","Age":12,"Alive":true,"FavoriteFilms":["Up","Avatar"],"Child":null },{"Name":"cy","Age":28,"Alive":false,"FavoriteFilms":null,"Child":{"Name":"lj", "Age":12,"Alive":true,"FavoriteFilms":["Up","Avatar"],"Child":null}}] 
        */
        public static T parse<T>(string jsonString)
        {
            using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString)))
            {
                return (T)new DataContractJsonSerializer(typeof(T)).ReadObject(ms);
            }
        }
        public static string stringify(object jsonObject)
        {
            using (var ms = new MemoryStream())
            {
                new DataContractJsonSerializer(jsonObject.GetType()).WriteObject(ms, jsonObject);
                return Encoding.UTF8.GetString(ms.ToArray());
            }
        }
    }
}

　　注意：若.net framework是3.5，需引用System.ServiceModel、System.ServiceModel.Web两个组件