/// <summary>
/// Handles the OnClosing event to prevent losing changes made to profiles.
/// </summary>
/// <param name="e">Event arguments.</param>
protected override void OnClosing(CancelEventArgs e)
{
if (e == null)
{
throw new ArgumentNullException("e");
}
base.OnClosing(e);
e.Cancel = e.Cancel || presenter.ExitApplicationRequested();
}
