// GET: Comment
        //Tai danh sach binh luan
        public ActionResult LoadComment(string masp, int?page)
        {
            CommentModel cm = new CommentModel();
            //cai dat phan trang
            //So san pham tren 1 trang
            int pageSize = 10;
            //So trang
            int pageNumber = (page ?? 1);

            ViewBag.masp = masp;
            return(PartialView("_CommentListPartial", cm.FindByMaSP(masp).OrderByDescending(m => m.NgayDang).ToPagedList(pageNumber, pageSize)));
        }