private void btnCreate_Click(object sender, System.EventArgs e)
        {
            FormTicketCE f = new FormTicketCE();

            f.ShowDialog();
            LoadDataGridView();
        }
        private void btnEdit_Click(object sender, System.EventArgs e)
        {
            Ticket       ticket = GetSelectedTicket();
            FormTicketCE f      = new FormTicketCE(ticket, HelperClass.FormMode.EDIT);

            f.ShowDialog();
            LoadDataGridView();
        }