public static void Main() { clsFanWrite a = new clsFanWrite(); clsInfoFan b = new clsInfoFan(); Serializer c = new Serializer(); b.Id = 121; b.Username = "******"; b.Password = "******"; b.Name = "pan121"; b.Genres = new List <string>(new string[] { "1", "3", "4" }); b.Birthday = "1-2-2016"; b.Country = "7"; b.Gender = "1"; clsFanWrite d = new clsFanWrite(); clsResponse f = new clsResponse(); d.updateFan(b, ref f); Console.WriteLine(c.Serialize(b)); Console.WriteLine(f.Message); Console.ReadKey(); }