private Task <IBitmap> LoadImageFromCache(string key, int size)
{
// If we don't have the small version of an artwork, resize it, save it and return it.
// This saves us a bunch of memory at the next startup, because BitmapImage has some
// kind of memory leak, so the not-resized image hangs around in memory forever.
string keyWithSize = BlobCacheKeys.GetArtworkKeyWithSize(key, size);
return(this.LoadImageFromCacheSave(keyWithSize)
.Catch <IBitmap, KeyNotFoundException>(ex =>
this.LoadImageFromCacheSave(key, size)
.SelectMany(async resized =>
{
await this.SaveImageToBlobCacheAsync(key, resized);
return resized;
}))
.ToTask());
}
