/// <summary>

        /// 转换成JSON字符串

        /// </summary>

        /// <param name="jsonObject"></param>

        /// <returns></returns>

        public static string stringify(object jsonObject)

        {

            try

            {

                using (var ms = new MemoryStream())

                {

                    new DataContractJsonSerializer(jsonObject.GetType()).WriteObject(ms, jsonObject);

                    return Encoding.UTF8.GetString(ms.ToArray());

                }

            }

            catch (Exception E)

            {

                Log4Net.Error("转换JSON字符串异常 : " + E.Message);

                return string.Empty;

            }

        }

using System.Runtime.Serialization.Json;