public FileAndFolderBrowserViewModel(IFileAndFolderBrowserModel fileAndFolderBrowserModel)
        {
            _fileAndFolderBrowserModel = fileAndFolderBrowserModel;

            FolderList = new ObservableCollection<FligFolder>(_fileAndFolderBrowserModel.FolderList);

            FileList = new Collection<FligFile>();
        }
        public FileAndFolderBrowserViewModel(IFileAndFolderBrowserModel fileAndFolderBrowserModel)
        {
            _fileAndFolderBrowserModel = fileAndFolderBrowserModel;

            FolderList = new ObservableCollection <FligFolder>(_fileAndFolderBrowserModel.FolderList);

            FileList = new Collection <FligFile>();
        }