public static void LoadPhotoUrl(Photo photo){
if (photo.PhotoBytes == null) {
var url = photo.PhotoUrl;
var request = HttpWebRequest.Create (url);
var ms = new MemoryStream ();
locker.WaitOne ();
using (var stream = ((HttpWebResponse)request.GetResponse ()).GetResponseStream ()) {
var bytes = new byte[256];
int read;
while ((read = stream.Read (bytes, 0, bytes.Length)) > 0) {
ms.Write (bytes, 0, read);
}
}
locker.Release ();
photo.PhotoBytes = ms.ToArray ();
}
}
public void RemoveFavorite (Photo photo)
{
if (Favorites.Any (p => p.PhotoID == photo.PhotoID)) {
Favorites.Remove (photo);
}
}
public void AddFavorite (Photo photo)
{
if (!Favorites.Any (p => p.PhotoID == photo.PhotoID)) {
Favorites.Add (photo);
}
}