public LogonPage() 
        {
            this.InitializeComponent();

            this.navigationHelper = new NavigationHelper(this);
            this.navigationHelper.LoadState += this.NavigationHelper_LoadState;
            this.navigationHelper.SaveState += this.NavigationHelper_SaveState;

            this.DataContext = this.pageContext;
        }
        public Airlines()
        {
            this.InitializeComponent();
            this.navigationHelper = new NavigationHelper(this);
            this.navigationHelper.LoadState += this.navigationHelper_LoadState;
            this.navigationHelper.SaveState += this.navigationHelper_SaveState;


#if WINDOWS_PHONE_APP
			((AppBarButton)AppCommandBar.SecondaryCommands[0]).Visibility = Visibility.Visible;
#endif
        }