public FileOpenPickerPageViewModel(ApplicationSettings settings, IImageSearchService imageSearchService, IFileOpenPickerUiManager fileOpenPicker)
        {
            _settings = settings;
            _imageSearchService = imageSearchService;
            _fileOpenPicker = fileOpenPicker;

            SearchCommand = new AsyncDelegateCommand(Search);
        }
        public FileOpenPickerPageViewModel(ApplicationSettings settings, IImageSearchService imageSearchService, IFileOpenPickerUiManager fileOpenPicker)
        {
            _settings           = settings;
            _imageSearchService = imageSearchService;
            _fileOpenPicker     = fileOpenPicker;

            SearchCommand = new AsyncDelegateCommand(Search);
        }