public AudiosViewModel() { Title = "Audios"; Audios = new ObservableCollection <Audio>(); LoadAudiosCommand = new Command(async() => await ExecuteLoadAudiosCommand()); MessagingCenter.Subscribe <NewAudioPage>(this, "AddAudio", async(obj) => { try { IsBusy = true; var audio = AudioTagHelper.Read(obj.PickedFile.FilePath, obj.PickedFile.DataArray); var isAudioAdded = await AudiosRepository.AddItemAsync(audio); if (isAudioAdded) { Audios.Add(audio); var audioFile = new AudioFile(audio.Id, obj.PickedFile.DataArray); var isFileAdded = await FilesService.AddItemAsync(audioFile); } } catch (Exception ex) { } finally { IsBusy = false; } }); }