private async void OnBrowsePictures() { try { var file = await FilePickerHelper.PickSingleFile(); if (file != null) { _navigationFacade.NavigateToCropView(file); } } catch (InvalidImageDimensionsException) { var resourceLoader = ResourceLoader.GetForCurrentView(); var message = string.Format(resourceLoader.GetString("InvalidImageSize_Message"), PhotoTypeContract.Standard.ToSideLength()); var title = resourceLoader.GetString("InvalidImageSize_Title"); await _dialogService.ShowNotification(message, title, false); } }