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我摘自windows 8.1示例的StorageDataSource和GetVirtualizedFilesVector示例一段代码在我的项目中可以成功运行，但是我改成这样：从ApplicationData.current.localFolder存入我的图片不显示成功

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();
}

注释说原始示例代码，注释，下面是我希望能够运行的代码行。多谢！

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1 回答 1

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你有图片库的访问权限吗？要像您的代码一样进行编程访问，应用程序应该拥有它。您可以从 Package.appxmanifest 中打开/关闭它。

于 2014-05-18T08:59:34.893 回答