private bool DeleteBook(string catalogueNumber)
{
try {
BookOperations.DeleteBook(catalogueNumber);
return(true);
}
catch (Exception) {
return(false);
}
}
private void BTNDeleteBook_Click(object sender, RoutedEventArgs e)
{
if (TXTBookCatalogueNumber.Text == string.Empty)
{
MessageBox.Show("Podaj numer katalogowy ksiazki ktora chcesz usunac!", "Libary System",
MessageBoxButton.OK,
MessageBoxImage.Error);
return;
}
try {
BookOperations.DeleteBook(TXTBookCatalogueNumber.Text);
MessageBox.Show("Ksiazka zostala usunieta pomyslnie!", "Libary System", MessageBoxButton.OK,
MessageBoxImage.Information);
TXTBookCatalogueNumber.Text = string.Empty;
}
catch (Exception exception) {
MessageBox.Show(exception.Message, "Libary System", MessageBoxButton.OK,
MessageBoxImage.Error);
}
}