ASP.NET MVC4 Controller与View传递强类型

[asp]代码库

 public ActionResult Edit(Album album)

        {

            if (ModelState.IsValid)

            {

                db.Entry(album).State = EntityState.Modified;

                db.SaveChanges();

                return RedirectToAction("Index");

            }

            ViewBag.ArtistId = new SelectList(db.Artists, "ArtistId", "Name", album.ArtistId);

            ViewBag.GenreId = new SelectList(db.Genres, "GenreId", "Name", album.GenreId);

            return View(album);

        }