private void AddEventButton_Click(object sender, EventArgs e)
 {
     if (!CheckIDTextBox())
     {
         return;
     }
     repo.AddEvents(overwriteCheckBox.Checked, new Event(int.Parse(IDTextBox.Text),
                                                         NameTextBox.Text,
                                                         (EventType)Enum.Parse(typeof(EventType),
                                                                               EventTypeComboBox.SelectedItem.ToString()),
                                                         DescriptionTextBox.Text));
     MessageBox.Show("Event Added");
     ClearTextBoxes();
 }