//default constructor
        public frmTicketInfo(frmSeatInfo seatForm)
        {
            InitializeComponent();

            //grab the seat from the
            this.seatForm = seatForm;
        }
        private void gateKeeper(object sender)
        {
            if (this.ButtonsEnabled)
            {
                //convert sender to Button
                Button btnSeatClicked = (Button)sender;

                //grab relevant seat number from button
                string seatNum = (string)btnSeatClicked.Tag;

                //create new form
                frmSeatInfo seatInfo = new frmSeatInfo(this, seatNum);

                //display form
                seatInfo.Show();
            }//end if
        }