private bool DeleteStudent(string pesel) { try { StudentOperations.DeleteStudentWithPesel(pesel); return(true); } catch (Exception) { return(false); } }
private void BTNDelete_Click(object sender, RoutedEventArgs e) { if (TXTBPesel.Text.Length < 11) { MessageBox.Show("Podaj poprawny PESEL!", "Libary System", MessageBoxButton.OK, MessageBoxImage.Error); return; } try { StudentOperations.DeleteStudentWithPesel(TXTBPesel.Text); MessageBox.Show("Uczen zostal poprawnie usuniety!", "Libary System", MessageBoxButton.OK, MessageBoxImage.Information); TXTBPesel.Text = string.Empty; } catch (NullReferenceException exception) { MessageBox.Show(exception.Message, "Libary System", MessageBoxButton.OK, MessageBoxImage.Error); } catch (Exception exception) { MessageBox.Show(exception.Message, "Libary System", MessageBoxButton.OK, MessageBoxImage.Error); throw new Exception(); } }