Question

我摘自Windows 8.1样本的StorageDataSource和GetVirtualizedFilesVector示例我的项目中的一段代码可以成功运行，但我改为：从ApplicationData.current.localFolder到我的图片中的存款没有显示成功

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();
}

注释原始示例代码，注释，遵循我希望能够运行的代码行。非常感谢！

Answer 1

您是否拥有图片库的访问权限？要像代码那样进行编程访问，应用程序应该拥有它。你可以从Package.appxmanifest开启/关闭它。

applicationData.current.localFolder.CreateFileQueryWithOptions（queryOptions）;不工作

1 个答案: