public JsonResult GetThongKe(string maloai)
        {
            QLSanPhamBus qlsp = new QLSanPhamBus();
            ThongKeSLSP  tk   = qlsp.ThongKeSoLuongSP(maloai);

            return(Json(tk, JsonRequestBehavior.AllowGet));
        }
        public JsonResult GetThongKe(string maloai)
        {
            ThongKeSLSP tk = qlsp.ThongKeSoLuongSP(maloai);

            return(Json(tk, JsonRequestBehavior.AllowGet));
        }