public async void GetQuestionList(int len, int amount, bool addon = false, string txt = null)
{
if (IsBusy)
{
return;
}
IsBusy = true; IsEmpty = false;
try
{
string link = Keys.Url_Main + "item-question/get-question/" + Itemid;
if (txt != null)
{
link += "?Search=" + txt;
}
ObservableCollection <mQuestion> result = new ObservableCollection <mQuestion>();
if (CrossConnectivity.Current.IsConnected)
{
result = await QuestionService.Instance.FetchQuestions(link, len, amount);
if (result == null)
{
if (addon)
{
isDone = true;
return;
}
IsEmpty = true;
return;
}
OfflineService.Write <ObservableCollection <mQuestion> >(result, Strings.ItemQuestion_Offline_fileName, null);
}
else
{
result = await OfflineService.Read <ObservableCollection <mQuestion> >(Strings.ItemQuestion_Offline_fileName, null);
}
if (result == null)
{
if (addon)
{
isDone = true;
return;
}
IsEmpty = true;
return;
}
if (addon)
{
Questionlist.AddRange(result);
}
else
{
Questionlist = result;
}
}
catch (Exception ex)
{
Debug.WriteLine(Keys.TAG + ex);
DialogService.ShowError(Strings.SomethingWrong);
Crashes.TrackError(ex);
return;
}
finally { IsBusy = false; IsListRefereshing = false; }
}
