BookManager.Web.Controllers.BooksController.Details C# (CSharp) Метод

        public ActionResult Details(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            var book = db.Books.Find(id);
            if (book == null)
            {
                return HttpNotFound();
            }

            db.Entry(book).State = EntityState.Modified;
            book.Count += 1;
            db.SaveChanges();

            return View(book);
        }