public static async Task<IList<Item>> UpdateFeedAsync(Feed feed, TimeSpan timeout) {
using (var downloader = new DownloadHelper(timeout))
using (var reader = await downloader.DownloadXmlAsync(feed.Url)) {
var factory = GetFeedFactory(reader);
if (factory != null) {
return factory.UpdateFeed(feed, reader);
}
return new Item[0];
}
}
public static Feed DownloadFeed(string url, TimeSpan timeout) {
using (var download = new DownloadHelper(timeout))
using (var reader = download.DownloadXml(url)) {
var factory = GetFeedFactory(reader);
if (factory != null) {
var feed = factory.CreateFeed(reader, url);
return feed;
}
return null;
}
}
// Instantiated as active download.
public DownloadViewModel(ItemViewModel item, string filename)
: this() {
_downloadHelper = new DownloadHelper(Settings.Default.DownloadTimeout);
_downloadHelper.DownloadProgressChanged += _downloadHelper_DownloadProgressChanged;
Title = item.Title;
FeedTitle = item.FeedTitle;
FileName = filename;
Url = item.PodcastUrl;
State = DownloadState.Downloading;
StartTime = DateTime.Now;
_podcastType = DownloadHelper.GetPodcastType(FileName);
// Timer for UI updates.
_updateTimer = new DispatcherTimer();
_updateTimer.Interval = DownloadUpdateInternal;
_updateTimer.Tick += _updateTimer_Tick;
StartAsync(); // Start download.
}
