/// <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);
        }