json序列化和发序列化

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

namespace Dtsc.WorkFlow
{
    public class JsonHelper
    {
        public static object GetObjectListByJsonText(Type t,string jsonText)
        {
            object obj = null;
            DataContractJsonSerializer ser1 = new DataContractJsonSerializer(t);          
            using (MemoryStream ms = new MemoryStream(Encoding.Unicode.GetBytes(jsonText)))
            {
                obj = ser1.ReadObject(ms);
            }
            return obj;
        }

        /// <summary>
        /// 返回序列化Json字符串
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="TObject">需转换对象，注意：需转换对象必须标注[Serializable]特性，对象属性必须标注[Serializable]特性</param>
        /// <returns></returns>
        public static string GetJsonString<T>(T TObject)
        {
            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));
            using (MemoryStream ms = new MemoryStream())
            {
                serializer.WriteObject(ms, TObject);
                string ss = Encoding.UTF8.GetString(ms.GetBuffer());
                return ss.Replace("\0", "");
            }
        }

        /// <summary>
        /// 将Json字符串转换成相应对象。
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="json">Json字符串</param>
        /// <returns></returns>
        public static T ReturnJsonObject<T>(string json)
        {
            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));
            using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(json)))
            {
                return (T)serializer.ReadObject(ms);
            }
        }
    }
}