private async void CheckInviterRequest() { if (!isValid()) { await App.Current.MainPage.DisplayAlert("提醒", "請確認資料是否完整", "確定"); return; } if (Pay_method.Val == 0) { SubmitRequest(); } else { var response = await service.CheckInviterRequest(Inviter_id_code); switch (response.Item1) { case 1: var result = await App.Current.MainPage.DisplayAlert("確認推薦人", $"確認推薦人姓名為:{response.Item2}", "是", "否"); if (result == true) { SubmitRequest(); } break; case 2: case 3: await App.Current.MainPage.DisplayAlert("錯誤", response.Item2, "確定"); break; default: break; } } }