Why all the white space? Anyway... have you set a breakpoint at (or just after) the offending line? It is possible for FileSystemWatcher to fire the same event multiple events in a very short space of time. My guess is it may be suceeding the first time, but the event may be immediately being reraised. Dave BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn) Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia) Why are you using VB6? Do you hate yourself? (Christian Graus)

You can use the code below, but it may need some performance improvements List<FileInfo> fi = new List<FileInfo>(); ListBox l = new ListBox(); private void Form1\_Load(object sender, EventArgs e) { } private void GetSubFoldersAndFiles(string path) { foreach (string d in Directory.GetDirectories(path)) { try { GetSubFoldersAndFiles(d); } catch (Exception) { } } foreach (string f in Directory.GetFiles(path)) { fi.Add(new FileInfo(f)); } } private void Form1\_Shown(object sender, EventArgs e) { l.Dock = DockStyle.Fill; this.Controls.Add(l); foreach (DriveInfo di in DriveInfo.GetDrives()) { if (di.IsReady) { GetSubFoldersAndFiles(di.RootDirectory.FullName); } } var a = (from s in fi orderby s.Length descending select s); l.DataSource = a.ToList(); }