private async Task SendTicket() { if (!String.IsNullOrEmpty(_subject) && !String.IsNullOrEmpty(_message)) { Category cat = new Category(); _ticket.FormatTicket(_subject, _message, cat); APIRepository apirepos = new APIRepository(); await apirepos.SendTicket(_ticket); //DisplayAlert await App.Current.MainPage.DisplayAlert("Ticket Send!", "The ticket has been send!", "OK"); } else { // TO DO: wat te doen indien subject of message leeg is Console.WriteLine("Subject of message is leeg."); } }