public override void ExecuteAsync()
{
lock (SyncRoot) {
SetStatus(TaskStatus.Running);
if (mre != null)
{
mre.Reset();
}
}
try {
wc = new AsyncWebClient();
wc.Timeout = (30 * 1000); // 30 Seconds
if (feed.LastDownloadError == FeedDownloadError.None && feed.LastDownloadTime != DateTime.MinValue)
{
wc.IfModifiedSince = feed.LastDownloadTime.ToUniversalTime();
}
wc.DownloadStringCompleted += OnDownloadDataReceived;
feed.DownloadStatus = FeedDownloadStatus.Downloading;
wc.DownloadStringAsync(new Uri(feed.Url));
} catch (Exception e) {
if (wc != null)
{
wc.DownloadStringCompleted -= OnDownloadDataReceived;
}
EmitCompletionEvents(FeedDownloadError.DownloadFailed);
Log.Error(e);
}
}
private async void GetArtists(object sender, RoutedEventArgs e)
{
if (cancellationToken != null)
{
cancellationToken.Cancel();
getArtists.IsEnabled = false;
return;
}
getArtists.Content = "Cancel";
Artists.Clear();
try
{
cancellationToken = new CancellationTokenSource();
var wc = new AsyncWebClient();
await GetArtistsAsync(wc, cancellationToken.Token, new Progress<Artist>(a=>Artists.Add(a)), GetBitmapImage);
}
catch (TaskCanceledException)
{
MessageBox.Show("Cancelled");
}
finally
{
getArtists.Content = "Get Artists";
cancellationToken = null;
getArtists.IsEnabled = true;
}
}
private void DestroyWebClient()
{
if (wc != null)
{
wc.DownloadFileCompleted -= OnDownloadFileCompletedHandler;
wc.DownloadProgressChanged -= OnDownloadProgressChangedHandler;
wc.ResponseReceived -= OnResponseReceivedHandler;
wc = null;
}
}
private void InitWebClient()
{
wc = new AsyncWebClient();
if (localStream.Length > 0)
{
wc.Range = Convert.ToInt32(localStream.Length);
//Console.WriteLine ("Adding Range: {0}", wc.Range);
}
wc.Timeout = (5 * 60 * 1000);
wc.DownloadFileCompleted += OnDownloadFileCompletedHandler;
wc.DownloadProgressChanged += OnDownloadProgressChangedHandler;
wc.ResponseReceived += OnResponseReceivedHandler;
}
