/// <summary>
/// Retrieve all photos by userId
/// </summary>
/// <param name="userID"></param>
/// <returns></returns>
public List <Photo> RetrievePhotosByUserID(int userID)
{
List <Photo> photos = photoDb.RetrievePhotosByUserID(userID, "Photo_RetrieveAllPhotosByUserId");
return(photos);
}