public ActionResult Show(int id)
        {
            var  entry         = _repository.FindById(id);                       // recupero l'oggetto con l'id specificato
            bool hasPermission = User.Identity.Name == "*****@*****.**"; //entry.Name;

            ViewBag.HasPermission = hasPermission;
            return(View(entry)); // lo passo alla View
        }
        // GET api/guestbookentry/5
        public GuestbookEntry Get(int id)
        {
            var entry = _repository.FindById(id);

            if (entry == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            return(entry);
        }