/// <summary>
/// Retreive random photo by gallery id
/// </summary>
/// <param name="galleryId">Id of gallery</param>
/// <returns></returns>
public Photo RetrieveRandomPhotoByGalleryId(int galleryId)
{
Photo photo = photoDb.RetrieveRandomPhotoByGalleryId(galleryId, "Photo_RetreiveRandomPhotoByGalleryId");
return(photo);
}