public class JsonHelper    {        /// <summary>        /// 生成Json格式        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="obj"></param>        /// <returns></returns>        public static string GetJson<T>(T obj)        {            DataContractJsonSerializer json = new DataContractJsonSerializer(obj.GetType());            using (MemoryStream stream = new MemoryStream())            {                json.WriteObject(stream, obj);                string szJson = Encoding.UTF8.GetString(stream.ToArray());                return szJson;            }        }        /// <summary>        /// 转换Json的Model对象        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="szJson"></param>        /// <returns></returns>        public static T ParseFromJson<T>(string szJson)        {            T obj = Activator.CreateInstance<T>();            using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(szJson)))            {                DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());                return (T)serializer.ReadObject(ms);            }        }        /// <summary>        /// 根据Json获取Dictionary集合        /// </summary>        /// <param name="szJson"></param>        /// <returns></returns>        public static Dictionary<string, string> GetDictionaryFromJson(string szJson)        {            Dictionary<string, string> list = new Dictionary<string, string>();            System.Web.Script.Serialization.JavaScriptSerializer jsonConvert = new System.Web.Script.Serialization.JavaScriptSerializer();            list = jsonConvert.Deserialize<Dictionary<string, string>>(szJson);            return list;        }    }