private void Back_Click(object sender, EventArgs e)
        {
            Reserveerscherm4Snacks nextForm = new Reserveerscherm4Snacks();

            this.Hide();
            nextForm.ShowDialog();
            this.Close();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            Reserveerscherm4Snacks nextForm = new Reserveerscherm4Snacks();

            this.Hide();
            nextForm.ShowDialog();
            this.Close();

            throw new System.NotImplementedException();
        }
 private void Next_Click(object sender, EventArgs e)
 {
     if (Program._ReservationSession.CurrentReservation.TicketAmount == Amount)
     {
         Program._ReservationSession.CurrentReservation.AddSeats(seats);
         Reserveerscherm4Snacks nextForm = new Reserveerscherm4Snacks();
         this.Hide();
         nextForm.ShowDialog();
         this.Close();
     }
     else
     {
         MessageBox.Show($"U heeft {Amount} stoelen gekozen, u moet er {Program._ReservationSession.CurrentReservation.TicketAmount} kiezen.");
     }
 }