protected override void OnNavigatedFrom(NavigationEventArgs e) { try { if (e.NavigationMode == NavigationMode.Back) { _previousIndex = 0; if (_articleViewModel != null) { ApplicationBar.IsVisible = false; _articleViewModel.ClearArticle(); } } base.OnNavigatedFrom(e); } catch (Exception exception) { if (Debugger.IsAttached) { Debug.WriteLine("ArticlePage.xaml.cs:" + exception); } } }