async Task getQuestionDetail(string key)
{
MessagingCenter.Instance.Unsubscribe <NewsFeedViewModel, string>(this, "keySurveyAnnc");
MessagingCenter.Instance.Unsubscribe <App, string>(this, MCenter.dataSurvey.ToString());
var surveyDetail = await surveyMVVM.getSurveyObject(key);
if (surveyDetail != null)
{
await getSurveyQuestionPage(key, surveyDetail);
}
}
