public IList <Image> EndLoadPortraits(IAsyncResult result)
{
AsyncLoadPortraitsResult loadImageResult = ThrowHelper.DownCast <AsyncLoadPortraitsResult>(result, "result");
loadImageResult.WaitForCallbackComplete();
List <Exception> errors = null;
foreach (Image img in loadImageResult.Closure)
{
if (img.Error != Error.Ok)
{
if (errors == null)
{
errors = new List <Exception>();
}
errors.Add(new Spotify.Exception(img.Error));
}
}
System.Exception ex = null;
if (errors != null)
{
ex = new AggregateException(errors);
}
loadImageResult.SetCompleted(ex);
loadImageResult.CheckPendingException();
return(loadImageResult.Closure);
}
public IAsyncResult BeginLoadPortraits(Session session, AsyncCallback userCallback, object state)
{
ThrowHelper.ThrowIfNull(session, "session");
int n = LibSpotify.sp_artistbrowse_num_portraits_r(Handle);
AsyncLoadPortraitsResult result = new AsyncLoadPortraitsResult(n, userCallback, state);
result.Closure = new List <Image>();
for (int i = 0; i < n; ++i)
{
Image image = new Image(LibSpotify.sp_image_create_r(session.Handle, LibSpotify.sp_artistbrowse_portrait_r(Handle, i)));
image.Loaded += result.HandleImageLoaded;
result.Closure.Add(image);
}
if (result.CheckComplete())
{
result.CompletedSynchronously = true;
}
return(result);
}
