// 引用 Newtonsoft.Json.dll
        /// <summary>
        /// JsonTools
        /// </summary>
        public class JsonTools
        {
            /// <summary>
            /// 從一個對象信息生成Json串  
            /// </summary>
            /// <param name="obj">對象</param>
            /// <returns></returns>
            public static string ObjectToJson(object obj)
            {
                return Newtonsoft.Json.JsonConvert.SerializeObject(obj);
            }

            /// <summary>
            ///  從一個Json串生成對象信息  
            /// </summary>
            /// <param name="jsonString">json字符串</param>
            /// <param name="obj"></param>
            /// <returns></returns>
            public static object JsonToObject(string jsonString, object obj)
            {
                return Newtonsoft.Json.JsonConvert.DeserializeObject(jsonString, obj.GetType());
            }
        }