// GET: Admin/ManageMobile
        public ActionResult Index()
        {
            Session["MANAGE"] = "Mobile";
            PhoneDAO        daoPhone     = new PhoneDAO();
            SupplierDAO     daoSup       = new SupplierDAO();
            List <Phone>    listMobile   = daoPhone.GetAllPhone();
            List <Supplier> listSupplier = daoSup.GetAllSupplier();

            ViewData["All_MOBILE"]   = listMobile;
            ViewData["All_Supplier"] = listSupplier;

            return(View());
        }