title: applicationData.current.localFolder.CreateFileQueryWithOptions(queryOptions); don't work
body: <p>I excerpt from windows 8.1 sample of StorageDataSource and GetVirtualizedFilesVector sample a piece of code in my project can run successfully, but I changed to this: From ApplicationData.current.localFolder the deposit into my pictures do not show up success</p>
  
  <pre><code>protected override void OnNavigatedTo(NavigationEventArgs e)
  {
          var queryOptions = new QueryOptions();
          queryOptions.FolderDepth = FolderDepth.Deep;
          queryOptions.IndexerOption = IndexerOption.UseIndexerWhenAvailable;
          queryOptions.SortOrder.Clear();
          var sortEntry = new SortEntry();
          sortEntry.PropertyName = "System.FileName";
          sortEntry.AscendingOrder = true;
          queryOptions.SortOrder.Add(sortEntry);
  
          //var fileQuery = KnownFolders.PicturesLibrary.CreateFileQueryWithOptions(queryOptions);
          var fileQuery = ApplicationData.Current.LocalFolder.CreateFileQueryWithOptions(queryOptions);
          const uint size = 400; // default size for PicturesView mode
          var fileInformationFactory = new FileInformationFactory(fileQuery, ThumbnailMode.PicturesView, size, ThumbnailOptions.UseCurrentScale, true);
          itemsViewSource.Source = fileInformationFactory.GetVirtualizedFilesVector();
  }
  </code></pre>
  
  <p>Commented that the original sample code, comments, following the line of code that I want to be able to run.
  thanks a lot!</p>