C# (CSharp) Checkout.CheckIn примеры использования

Пример #1

        public ActionResult ReturnBook(string checkoutId)
        {
            Checkout checkoutToReturn = Checkout.Find(int.Parse(checkoutId));

            checkoutToReturn.CheckIn();
            Book bookReturned = Book.Find(checkoutToReturn.BookId);

            bookReturned.BookReturn();
            return(View("Details", checkoutToReturn));
        }