public RequestQueueForm(QueueForm queueForm, TicketQueue ticketQueue)
        {
            InitializeComponent();
            this.ticketQueue = ticketQueue;

            this.btnGetNextTicket.Enabled = true;
            this.btnHandleIt.Enabled      = false;
        }
        private void btnHandleIt_Click(object sender, EventArgs e)
        {
            this.ticketQueue.Queue.Dequeue();

            this.btnGetNextTicket.Enabled = true;
            this.btnHandleIt.Enabled      = false;

            this.queueForm = new QueueForm(this.ticketQueue);
            this.queueForm.Show();
            this.Close();
        }