Verzeichnisgröße

long verzeichnisgröße(String root)
        {
            long size = 0;
            string[] directories = Directory.GetDirectories(root);
            for (int i = 0; i < directories.Length; i++)
            {
                String path = directories[i];
                size += verzeichnisgröße(root);
            }
            string[] files = Directory.GetFiles(root);
            for (int i = 0; i < files.Length; i++)
            {
                String path = files[i];
                FileInfo info = new FileInfo(path);
                size += info.Length;
            }
            return size;
        }