private void btnSave_Click(object sender, EventArgs e) { Driver d = (Driver)cbDriver.SelectedItem; Vehicle v = (Vehicle)cbVehicle.SelectedItem; timetable.name = tbName.Text; timetable.arrival = drArrival.Value; timetable.departure = dtDeparture.Value; timetable.driver = d; timetable.vehicle = v; TimetablesConnector tc = new TimetablesConnector(); var m = tc.update(timetable); if (m == "\"OK\"") { this.Close(); } else { label7.Visible = true; label7.Text = m; } }