public Ticket GetTicketFromList()
{
object item = lstActiveTickets.SelectedItem;
if (item != null)
{
string ticketID = item.ToString().Substring(1, 7);
return(activeTickets.GetTicket(ticketID));
}
return(null);
}
private void btnPayForTicket_Click(object sender, EventArgs e)
{
int index = lstActiveTickets.SelectedIndex;
if (index != -1)
{
Ticket ticket;
ticket = activeTickets.GetTicket(index);
paymentMachine.PayTicket(ticket);
UpdateDisplay();
}
else
{
MessageBox.Show("Please select the ticket that you want to pay for");
}
}