private void BtnDelete_Click(object sender, RoutedEventArgs e)
{
if (lstProducts.SelectedItem != null)
{
if (MessageBox.Show("Ben je zeker ?", "Wissen", MessageBoxButton.YesNo, MessageBoxImage.Warning) == MessageBoxResult.Yes)
{
globalService.DeleteProduct((Product)lstProducts.SelectedItem);
PopulateListbox();
ClearControls();
}
}
}