public async static Task <List <Attendance> > GetAttendanceResponse(int empid, DateTime SDate, DateTime EDate) { try { var url = Attendance.GenerateAttendanceURL(empid, SDate, EDate); using (HttpClient client = new HttpClient()) { var response = await client.GetAsync(url); var json = await response.Content.ReadAsStringAsync(); var AttendanceList = JsonConvert.DeserializeObject <List <Attendance> >(json); return(AttendanceList); } } catch (Exception ex) { await App.Current.MainPage.DisplayAlert("Attendance not loaded", "Internet is not available or Server not found", "OK"); return(null); } }