public JsonResult GetAllData(int rows, int page)
        {
            NgoaiNguService service = new NgoaiNguService();
            List<NgoaiNguEntity> ngoaingus= new List<NgoaiNguEntity>();

            try
            {
                ngoaingus= service.GetAll();
                return Json(PaginationHelper<NgoaiNguEntity>.Execute(ngoaingus, page, rows), JsonRequestBehavior.AllowGet);
            }
            catch (Exception e)
            {
                System.Console.WriteLine(e.ToString());
            }

            return Json(null);
        }
        // GET: NgoaiNgu
        public ActionResult Index()
        {
            NgoaiNguService service = new NgoaiNguService();
            List<NgoaiNguEntity> ngoaingus= new List<NgoaiNguEntity>();
            string result = null;

            try
            {
                ngoaingus= service.GetAll();
                result = JsonConvert.SerializeObject(ngoaingus);
                RenderResult.RequestCompleted(ViewData, result);
            }
            catch (Exception e)
            {
                System.Console.WriteLine(e.ToString());
                RenderResult.RequestError(ViewData, "Lỗi hệ thống");
            }

            return View();
        }
        public JsonResult GetAllDataWithoutPagination()
        {
            NgoaiNguService service = new NgoaiNguService();
            List<NgoaiNguEntity> entities = new List<NgoaiNguEntity>();
            string result = null;
            try
            {
                entities = service.GetAll();
                result = JsonConvert.SerializeObject(entities);
                return Json(RenderResult.RequestCompleted(ViewData, result), JsonRequestBehavior.AllowGet);
            }
            catch (Exception e)
            {
                System.Console.WriteLine(e.ToString());
            }

            return Json(null);
        }
        public JsonResult GetMaQuyDinh()
        {
            NgoaiNguService service = new NgoaiNguService();

            try
            {
                return Json(RenderResult.RequestCompleted(ViewData, GenKey.GenIncrementKey("NN", 3, service.GetAll().Count)), JsonRequestBehavior.AllowGet);
            }
            catch (Exception e)
            {
                System.Console.WriteLine(e.ToString());
                return Json(RenderResult.RequestError(ViewData, "Lỗi xảy ra"), JsonRequestBehavior.AllowGet);
            }
        }
 public JsonResult GetAllIdNgoaiNgu()
 {
     string result = null;
     NgoaiNguService service = new NgoaiNguService();
     List<NgoaiNguEntity> nnServices = new List<NgoaiNguEntity>();
     try
     {
         nnServices = service.GetAll();
         result = JsonConvert.SerializeObject(nnServices);
         return Json(nnServices, JsonRequestBehavior.AllowGet);
     }
     catch (Exception e)
     {
         System.Console.WriteLine(e.ToString());
         return Json(null);
     }
 }