private void ButtonAdd_Click(object sender, EventArgs e) { if (cbxAd.SelectedIndex > -1) { try { _controller.AddAdToSchedule(this, _schedule); Close(); } catch (DateTimeRuleException ex) { MessageBox.Show(ex.Message, @"Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } } else { MessageBox.Show(@"No ad selected!", @"Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } }