/*!
* \brief Remove the selected ticket (if any) from the lottery.
*
* If no ticket is selected, the function does nothing besides showing an error message.
* If removing the selected ticket leaves the list empty, the add-comment button
* and delete-ticket button are disabled.
*/
private void BtnRemoveTicket_Click(object sender, RoutedEventArgs e)
{
if (!HasTicketSelected())
{
return;
}
var ticket = (Ticket)LwTickets.SelectedItem;
if (WndDialogMessage.Show(this, "Do you want to delete this ticket?\n\nLottery number: " + ticket.LotteryNumber, "Confirm Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning) != MessageBoxResult.Yes)
{
return;
}
CurrentLottery.RemoveTicket(ticket);
LwTickets.Items.Remove(ticket);
var oldPrice = int.Parse(TxtPrize.Text);
TxtPrize.Text = "" + (oldPrice - ticket.Price);
if (LwTickets.Items.Count < 1)
{
BtnAddComment.IsEnabled = false;
BtnRemoveTicket.IsEnabled = false;
}
}
//! Discards the tickets on the window closing if member DiscardTicketsOnClose is true.
private void NewTicketsWindow_OnClosing(object sender, CancelEventArgs e)
{
if (DiscardTicketsOnClose)
{
foreach (Ticket ticket in LwTickets.Items)
{
CurrentLottery.RemoveTicket(ticket);
}
}
if (Owner != null)
{
Owner.IsEnabled = true;
}
}