private void btnDelete_Click(object sender, RoutedEventArgs e)
{
RadButton _button = (RadButton)sender;
int ID = ((Dealer)_button.DataContext).ID;
Dealer _selectedDealer = DealerService.GetByID(ID);
if (MessageBox.Show("Delete the dealer: " + _selectedDealer.CompanyName, "Confirm delete dealer", MessageBoxButton.YesNo) == MessageBoxResult.Yes)
{
DealerService.Delete(_selectedDealer);
}
LoadDealers();
}