C#对象序列化json json序列化为对象

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.Extensions;
using System.Web.Script.Serialization;
using System.IO;
using System.Runtime.Serialization.Json;
using System.Runtime.Serialization;

namespace ReservationCarTool
{
    public static class JsonToClass
    {

        public static String ModelToJson(this Object o)
        {
            JavaScriptSerializer Serializer = new JavaScriptSerializer();
            String objJson = Serializer.Serialize(o);
            return objJson;
        }


        public static List<T> JSONStringToList<T>(this string JsonStr)
        {
            JavaScriptSerializer Serializer = new JavaScriptSerializer();
            List<T> objs = Serializer.Deserialize<List<T>>(JsonStr);
            return objs;
        }

        public static T JSONStringToModel<T>(this string JsonStr)
        {
            JavaScriptSerializer Serializer = new JavaScriptSerializer();
            T objs = Serializer.Deserialize<T>(JsonStr);
            return objs;
        }

        public static T Deserialize<T>(string json)
        {
            T obj = Activator.CreateInstance<T>();
            using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(json)))
            {
                DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
                return (T)serializer.ReadObject(ms);
            }
        }   

    }


}