Model实体与Json互相转换

///

        /// 把对象转换为JSON字符串
        ///

public static string GetJson(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;
            }
        }

 

 

///

        /// 把JSON字符串还原为对象
        ///

        /// 对象类型
        /// JSON字符串
        /// 对象实体
        public static T ParseFormJson(string szJson)
        {
            T obj = Activator.CreateInstance();
            using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(szJson)))
            {
                DataContractJsonSerializer dcj = new DataContractJsonSerializer(typeof(T));
                return (T)dcj.ReadObject(ms);
            }
        }