private void RetryDownloads(IEnumerable <DownloadOperation> downloads)
{
BackgroundDownloader downloader = CompletionGroupTask.CreateBackgroundDownloader();
foreach (DownloadOperation download in downloads)
{
DownloadOperation download1 = downloader.CreateDownload(download.RequestedUri, download.ResultFile);
Task <DownloadOperation> startTask = download1.StartAsync().AsTask();
}
downloader.CompletionGroup.Enable();
}
private async Task RetryDownloadsAsync(IEnumerable <DownloadOperation> downloadsToRetry)
{
BackgroundDownloader downloader = CompletionGroupTask.CreateBackgroundDownloader();
foreach (DownloadOperation downloadToRetry in downloadsToRetry)
{
// Retry with the same uri, but save to a different file name.
string originalName = downloadToRetry.ResultFile.Name;
string newName = originalName.Insert(originalName.LastIndexOf('.'), "_retried");
await downloadToRetry.ResultFile.RenameAsync(newName, NameCollisionOption.ReplaceExisting);
DownloadOperation download = downloader.CreateDownload(downloadToRetry.RequestedUri, downloadToRetry.ResultFile);
// We do not await on background transfer asynchronous tasks, since await will only
// finish after the entire transfer is complete, which may take a very long time.
// The completion of these downloads will be handled by a future CompletionGroupTask instance.
Task <DownloadOperation> startTask = download.StartAsync().AsTask();
}
downloader.CompletionGroup.Enable();
}