private void SaveButton_Click(object sender, EventArgs e) { if (topics[TopicCombobox.SelectedIndex].Status.Equals("Open")) { DependencyFacade.SetTopic(topics[TopicCombobox.SelectedIndex].ID, Convert.ToInt32(SectionTexbox.Text)); this.Hide(); } else { MessageBox.Show("This topic is already closed!", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning); } }