public static void DeSerialize(Stream streamObj, out Data wpObj)
        {
            DataContractJsonSerializer js = new DataContractJsonSerializer(typeof(Data));

            wpObj = (Data)js.ReadObject(streamObj);
        }
        public static void Serialize(Data wpObj, Stream streamObj)
        {
            DataContractJsonSerializer js = new DataContractJsonSerializer(typeof(Data));

            js.WriteObject(streamObj, wpObj);
        }