Exit bool

Hi

I am attempting to create my own exit confirmation window (not to sure if you could use a page to do this) struggling with the bool functions, created a static int in main window ( to which I assigned number values from exitConfirmation window) tried using these within a bool but not to sure why the program rejects all attempts I have made.

 public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        public static int exitNumber;

    public bool Exitbool()
        {

            if (exitNumber == 1)
            { return true; }

            else if (exitNumber == 2)
            {
                return true;
                saveWindow save = new saveWindow();
                save.Show();
            }

            else if (exitNumber == 3)
            { return false; }

        }

        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {

        }
    }

and here is the second window

 public partial class exitConfirmation : Page
    {
        public exitConfirmation()
        {
            InitializeComponent();
        }

        private void exitConfirmationYes_btn_Click(object sender, RoutedEventArgs e)
        {
            MainWindow.exitNumber = 1;
        }

        private void exitConfirmationNo_btn_Click(object sender, RoutedEventArgs e)
        {
            MainWindow.exitNumber = 2;
        }

        private void exitConfirmationCancel_btn_Click(object sender, RoutedEventArgs e)
        {
            MainWindow.exitNumber = 3;
        }
    }