private void Init() { PropertyChanged += (s, e) => { // Update IsEditable if (e.PropertyName == nameof(Status)) { OnPropertyChanged(nameof(IsEditable)); } if (e.PropertyName == nameof(Label) || e.PropertyName == nameof(Description) || e.PropertyName == nameof(Type)) { ((Command)SaveBelegCommand).ChangeCanExecute(); } //OnPropertyChanged(nameof(CanSave)); }; SaveBelegCommand = new Command(async() => { Beleg beleg = this.GetBusinessObject(); if (beleg.Thumbnail == null && beleg.Image != null) { beleg.Thumbnail = await BelegService.CreateThumbnail(beleg.Image); } var result = Storage.Database.StoreBeleg(beleg).Result; if (result > 0) { Callback(); } }, () => CanSave); StartCameraCommand = new Command(async() => { var img = await ImageServices.CaptureImage(); Image = ConvertStreamToByteArray(img); }); SelectPictureCommand = new Command(async() => { var img = await ImageServices.SelectImage(); Image = ConvertStreamToByteArray(img); }); AddValidations(); }