public async void DoAll()
        {
            myAPI = RestService.For <IMyAPI>("https://goldenspa.azurewebsites.net");
            var result = await myAPI.GetComment(Intent.GetStringExtra("ServiceId"));

            for (int i = 0; i < result.Count; i++)
            {
                star[(result[i].SoSao ?? default(int)) - 1]++;
            }

            Drawchart();
            double avg;

            if (((star[0] + star[1] + star[2] + star[3] + star[4])) != 0)
            {
                avg = ((star[0] * 1 + star[1] * 2 + star[2] * 3 + star[3] * 4 + star[4] * 5) / (star[0] + star[1] + star[2] + star[3] + star[4]));
            }
            else
            {
                avg = 0;
            }
            avg           = Math.Round(avg, 1);
            rateStar.Text = (avg.ToString() + "/5").ToString();
            Array.Clear(star, 0, star.Length);
        }
        private async void getComment()
        {
            myAPI = RestService.For <IMyAPI>("https://goldenspa.azurewebsites.net");
            var result = await myAPI.GetComment(Intent.GetStringExtra("ServiceId"));

            mCustomerComment_List = new List <Comment>(result.Count);

            for (int i = 0; i < result.Count; i++)
            {
                var DataSample_Services_Outlet_ViewModel = new Comment();
                DataSample_Services_Outlet_ViewModel.Anh     = result[i].Anh;
                DataSample_Services_Outlet_ViewModel.TenKH   = result[i].TenKH;
                DataSample_Services_Outlet_ViewModel.comment = result[i].comment;
                DataSample_Services_Outlet_ViewModel.Ngay    = result[i].Ngay;
                DataSample_Services_Outlet_ViewModel.SoSao   = result[i].SoSao;
                mCustomerComment_List.Add(DataSample_Services_Outlet_ViewModel);
            }
            mAdapterCustomerComment = new Service_CustomerComment_Customer_Adapter(mCustomerComment_List);
            mRecyclerViewCustomerComment.SetAdapter(mAdapterCustomerComment);
        }