CairoDesktop.MenuBar.OpenLogoffBox C# (CSharp) Method

        private void OpenLogoffBox(object sender, RoutedEventArgs e)
        {
            bool? LogoffChoice = CairoMessage.ShowOkCancel("You will lose all unsaved documents and be logged off.", "Are you sure you want to log off now?", "Resources/logoffIcon.png", "Log Off", "Cancel");
            if (LogoffChoice.HasValue && LogoffChoice.Value)
            {
                NativeMethods.Logoff();
            }
            else
            {
            }
        }