//SHOW BOOK MENU USER CONTROLLER ONLY =>PL
        private void BtnBooks_Click(object sender, RoutedEventArgs e)
        {
            AdminBooks adminBooks = new AdminBooks();

            adminStackPanel.Children.Clear();
            adminStackPanel.Children.Add(adminBooks);
        }
        //SHOW BOOK MENU USER CONTROLLER ONLY =>PL
        public AdminHome()
        {
            InitializeComponent();
            AdminBooks adminBooks = new AdminBooks();

            adminStackPanel.Children.Clear();
            adminStackPanel.Children.Add(adminBooks);
        }