public class JsonHelper

    {

        #region 对象类型序列化为json 字符

        /// <summary>

        /// 对象类型序列化为json 字符

        /// </summary>

        /// <typeparam name="T">实体类型</typeparam>

        /// <param name="jsonObject">待转换实体</param>

        /// <param name="encoding">编码格式</param>

        /// <returns>string</returns>

        public static string ObjectToJson<T>(Object jsonObject, Encoding encoding)

        {

            string result = String.Empty;

            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));

            using (System.IO.MemoryStream ms = new System.IO.MemoryStream())

            {

                serializer.WriteObject(ms, jsonObject);

                result = encoding.GetString(ms.ToArray());

            }

            return result;

        }

        #endregion

        #region json字符反序列化为对象

        /// <summary>

        /// json字符反序列化为对象

        /// </summary>

        /// <typeparam name="T">实体类型</typeparam>

        /// <param name="json">json字符串</param>

        /// <param name="encoding">编码格式</param>

        /// <returns>T</returns>

        public static T JsonToObject<T>(string json, Encoding encoding)

        {

            T resultObject = default(T);

            try

            {

                resultObject = Activator.CreateInstance<T>();

                DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));

                using (System.IO.MemoryStream ms = new System.IO.MemoryStream(encoding.GetBytes(json)))

                {

                    resultObject = (T)serializer.ReadObject(ms);

                }

            }

            catch { }

            return resultObject;

        }

        #endregion

    }