private void buttonInsertTheBatteries_Click(object sender, EventArgs e) { if (Flashlight.GetBatteriesCount() < 3) { Flashlight.InsertBatteries(); switch (Flashlight.GetBatteriesCount()) { case 1: textBoxBattery1.Text = Flashlight.GetVoltage(Flashlight.GetBatteriesCount() - 1).ToString() + " %"; break; case 2: textBoxBattery2.Text = Flashlight.GetVoltage(Flashlight.GetBatteriesCount() - 1).ToString() + " %"; break; case 3: textBoxBattery3.Text = Flashlight.GetVoltage(Flashlight.GetBatteriesCount() - 1).ToString() + " %"; break; } } else { MessageBox.Show("Włożono wszystkie baterie.", "Informacja"); } }