Сканирование папки и дальнейшие действия с ней

 
public void dirwatcher()
        {
            string put = @"B:\sb";
            FileSystemWatcher watcher = new FileSystemWatcher();
            watcher.Path = put;
            watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite | NotifyFilters.FileName | NotifyFilters.DirectoryName;
            watcher.Filter = "sb*.sav";
 
 
            watcher.Changed += new FileSystemEventHandler(OnChanged);
            watcher.Created += new FileSystemEventHandler(OnChanged);
            //watcher.Deleted += new FileSystemEventHandler(OnChanged);
            watcher.Renamed += new RenamedEventHandler(OnRenamed);
 
 
            watcher.EnableRaisingEvents = true;
 
            
        }
        string pathfile;
 
        private void OnChanged(object source, FileSystemEventArgs e)
        {
            pathfile = e.Name;
            MessageBox.Show(pathfile, "We find");
            parssb();
 
        }
 
        private static void OnRenamed(object source, RenamedEventArgs e)
        {
            Console.WriteLine("File: {0} renamed to {1}", e.OldFullPath, e.FullPath);
        }