BookMgnt.Controllers.AdminController.Details C# (CSharp) Method

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