public void Initialize(MemoryCard memoryCard, string backgroundUriString)
 {
     MemoryCard = memoryCard;
     CardBackgroundImageUriString = backgroundUriString;
 }
 public void Initialize(Uri imageUri, string backgroundUriString)
 {
     if (MemoryCard == null)
     {
         MemoryCard = new MemoryCard();
     }
     MemoryCard.ImageUri = imageUri;
     ImageUriString = imageUri.ToString();
     CardBackgroundImageUriString = backgroundUriString;
 }