private void buttonPantographUp_Click(object sender, EventArgs e) { if (vehicle is Tram) { Tram tram = (Tram)vehicle; MessageBox.Show(tram.PantographUp()); } else { MessageBox.Show("Wybrany obiekt nie jest tramwajem"); } }
private void buttonBell_Click(object sender, EventArgs e) { if (vehicle is Tram) { Tram tram = (Tram)vehicle; MessageBox.Show(tram.Bell()); } else { MessageBox.Show("Obiekt nie jest tramwajem!"); } }