public MainWindow()
 {
     InitializeComponent();
     config = new ConfigureWpfFiler();
     config.LoadConfiguration();
     DriveInfo[] drives = DriveInfo.GetDrives();
     foreach (DriveInfo d in drives)
     {
         Tree.Items.Add(CreateTreeViewItem(d));
     }
     Tabs.Items.Add(new CloseableTab());
 }