private void Admin_StatisticalPage_Loaded(object sender, RoutedEventArgs e) { ws = new kidmathwebserviceSoapClient(); List <khoaHoc> dskhoahoc = new List <khoaHoc>(); dskhoahoc = ws.getDataKhoaHocAsync().Result.Body.getDataKhoaHocResult.ToList <khoaHoc>(); dskhoahoc = dskhoahoc.FindAll(kh => kh.maKhoaHoc != ""); adpage_statistical_dskhoahoc.ItemsSource = dskhoahoc; ws = new kidmathwebserviceSoapClient(); soLuongNguoiDung.Text = ws.checkExistsAsync("select * from nguoiDung").Result.Body.checkExistsResult.ToString(); ws = new kidmathwebserviceSoapClient(); soLuongKhoaHocDaBan.Text = ws.checkExistsAsync("select * from muaKhoaHoc").Result.Body.checkExistsResult.ToString(); ws = new kidmathwebserviceSoapClient(); tongSoTienNguoiDungNap.Text = ws.doanhthu_functAsync().Result.ToString(); ws = new kidmathwebserviceSoapClient(); tongSoTienNguoiDungSuDung.Text = (Convert.ToInt32(tongSoTienNguoiDungNap.Text) - ws.nguoidungchi_functAsync().Result).ToString(); }