private void buttonAddJob_Click(object sender, EventArgs e) { if (comboBoxCorpus.Text == "") { MessageBox.Show("Выберите корпус"); } else if (comboBoxFloor.Text == "") { MessageBox.Show("Выберите этаж"); } else { int cabinetNum = (int)numericUpDownCabinetNum.Value; string corpusName = comboBoxCorpus.Text; int floorNum = int.Parse(comboBoxFloor.Text); Cabinet newCabinet = ControlFunctions.CreateCabinet(corpusName, floorNum, cabinetNum); string result = ControlFunctions.AddCabinet(newCabinet); if (result != null) { MessageBox.Show(result, "Ошибка"); } else { ReloadForm(false); } } }