private void DeletebtnClicked(object sender, EventArgs e)
        {
            RTicket t = new RTicket();

            t.Ticketid = this.Ticketidtbox.Text;
            TicketRepository TicketRepo = new TicketRepository();

            if (TicketRepo.CancelReservation(t.Ticketid))
            {
                MessageBox.Show("Ticket Reservation Deleted", "Delete");
            }
            else
            {
                MessageBox.Show("Can Not Delete Data", "Delete Error");
            }
        }