public JsonResult GETDANHSACHCHUYENLOPTUTTKHAC(int?DuBao)
        {
            var nguoidung = User.Identity.Name;
            var model     = db.SP_APAX_GETDANHSACHCHUYENLOPTUTTKHAC(nguoidung, DuBao).ToList();

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