public ActionResult DemoPostNews(FormCollection form)
        {
            string   tieuDe       = HttpUtility.HtmlEncode(form["txtTieuDe"]);
            string   noiDung      = HttpUtility.HtmlEncode(form["txtNoiDung"]);
            DateTime thoiGianDang = DateTime.Now;

            // Them vao db
            THONGBAO thongBao = new THONGBAO()
            {
                MaThongBao   = 1,
                TieuDe       = tieuDe,
                NoiDung      = noiDung,
                ThoiGianDang = thoiGianDang
            };

            DemoKetQua demo = new DemoKetQua();

            try
            {
                ThongBaoDao.AddThongBao(thongBao);
                thongBao.MaThongBao = ThongBaoDao.GetMaxId();

                // Thong bao den client app
                FCMController fcm      = new FCMController();
                string        message  = fcm.CreateNewsNotification(thongBao);
                string        response = fcm.SendMessage(message);

                // Hien thi ket qua thanh cong
                demo.KetQua   = "Them thanh cong !!!";
                demo.PhanHoi  = response;
                demo.TinGuiDi = message;
            }
            catch (Exception ex)
            {
                // hien thi loi
                demo.PhanHoi = ex.Message + ex.StackTrace;
            }

            return(RedirectToAction("DemoPostNews", "Demo", demo));
        }
        protected void btnGui_Click(object sender, EventArgs e)
        {
            string   tieuDe       = HttpUtility.HtmlEncode(txtTieuDe.Text);
            string   noiDung      = HttpUtility.HtmlEncode(txtNoiDung.Text);
            DateTime thoiGianDang = DateTime.Now;

            // Them vao db
            THONGBAO thongBao = new THONGBAO()
            {
                MaThongBao   = 1,
                TieuDe       = tieuDe,
                NoiDung      = noiDung,
                ThoiGianDang = thoiGianDang
            };

            try
            {
                ThongBaoDao.AddThongBao(thongBao);
                thongBao.MaThongBao = ThongBaoDao.GetMaxId();

                // Thong bao den client app
                FCMController fcm      = new FCMController();
                string        message  = fcm.CreateNewsNotification(thongBao);
                string        response = fcm.SendMessage(message);

                // Hien thi ket qua thanh cong
                lblKetQua.Text     = "Them thanh cong !!!";
                lblKetQua.CssClass = "text-success";
                lblLoi.Text        = response;
                lblTinGuiDi.Text   = message;
            }
            catch (Exception ex)
            {
                // hien thi loi
                lblLoi.Text = ex.Message + ex.StackTrace;
                return;
            }
        }