private void Delete(object sender, RoutedEventArgs e)
{
if (_book.IsBorrowed)
{
BookError.Content = "A könyv nem törölhető mert ki van kölcsönözve!";
BookError.Visibility = Visibility.Visible;
}
else
{
try
{
BookError.Visibility = Visibility.Collapsed;
BookDataProvider.DeleteById(_book.Id);
DialogResult = true;
Close();
}
catch (Exception ex)
{
log.Error(ex.Message);
}
}
}