public ActionResult CreateSach(Sach sach) { ViewBag.danhmuc = danhMucDAO.dsDanhMuc(); ViewBag.theloai = theLoaiDAO.dsTheLoai(); ViewBag.tacgia = tacGiaDAO.dsTacGia(); ViewBag.nxb = nXBDAO.dsNXB(); if (ModelState.IsValid) { SachDAO sachDAO = new SachDAO(); sachDAO.Create(sach); return(Redirect("Index")); } return(View("Create")); }