public void DeleteTicket()
        {
            if (CurrentTicket != null)
            {
                CurrentTicket.Delete(false);
                Tickets.Remove(CurrentTicket);
                NotifyOfPropertyChange("Tickets");

                NotifyOfPropertyChange("CmdStatus");
                NotifyOfPropertyChange("CmdColor");
                CreateCartLines();

                MessageQueue.Enqueue("Ticket supprimer");
                NextTicket();

                if (ShowTicketsVisible)
                {
                    ShowTickets();
                }
            }
        }