public MainWindow(IDriveService driveService,
IFileSystemService fileSystemService,
IStatisticsService statisticsService)
{
InitializeComponent();
this.driveService = driveService;
this.fileSystemService = fileSystemService;
this.statisticsService = statisticsService;
DataContext = this;
DriveInfos = new ObservableCollection <DriveInfo>();
driveService.StartWatcher(SynchronizationContext.Current, DriveInfos);
}