Inheritance: Windows.UI.Xaml.DependencyObject
 public NavigationObjectPage(Page page)
 {
     _page = page;
     _navigationHelper = new NavigationHelper(page);
     _navigationHelper.LoadState += NavigationHelperOnLoadState;
     _navigationHelper.SaveState += NavigationHelperOnSaveState;
     _navigationHelper.OnGoBack += NavigationHelperOnGoBack;
 }
        public ListPickerPage()
        {
            InitializeComponent();

            this._navigationHelper = new NavigationHelper(this);
        }