//书籍详情 public ActionResult Book(int id) { //书籍信息 JY_Book b = null; List<CatalogItem> catalog = null; using (JYBookDao dao = new JYBookDao()) { b = dao.get(id); catalog = dao.getCatalog(id); } if (b == null) throw new ApplicationException("找不到书籍"); //书籍目录 ViewBag.catalog = catalog; ViewBag.firstArticleId = catalog.First().Id; return View(b); }