C#

private void GetSubDirs(string parentFolder, string parentNumber)
{
    string[] SubDirs = Directory.GetDirectories(parentFolder, "*.*", SearchOption.TopDirectoryOnly);
    for (int i = 0; i < SubDirs.Count(); i++)
    {
        string curNumber = String.Format("{0}.{1}", parentNumber, i + 1);
        // Output folder name and curNumber
        GetSubDirs(SubDirs[i], curNumber);
    }
}

Freak30 wrote:

i < SubDirs.Count()

private string[] SubDirs;
//
private void GetSubDirs(string currentDirectory, int counter, string currentDirectoryName)
{
    DirectoryInfo di = new DirectoryInfo(item);

    // does the directory exist ?
    if (di.Exists)
    {
        // can we access the directory ?
        if (di.Attributes.HasFlag(FileAttributes.Hidden)) return;

        // avoid other unknown errors in parsing
        try
        {
            //Get next list of folders in the folder hierarchy
            SubDirs = Directory.GetDirectories(item, "*.*", SearchOption.TopDirectoryOnly);

            foreach(string subDir in SubDirs)
            {
                //Increment count of folders within the current folder list
                counter++;
                string iName = sName + "." + counter.ToString();
                Console.WriteLine("{0} Processed Sub-Folder {1}", iName, subDir);
                GetSubDirs(subDir, 0, iName);
            }
        }
        catch (Exception)
        {
            // consider throwing an error ?
            return;
        }
    }
    else
    {
        // consider throwing an error ?
        return;
    }
}