C#

static void BrowsePrint(string folder)
{
    DirectoryInfo di = new DirectoryInfo(folder);
    FileInfo[] fiarr = di.GetFiles();
    if(fiarr.Length == 0)
        Console.WriteLine("\t...no files");
    foreach( FileInfo fi in fiarr )
        Console.WriteLine("\t{0}",fi.FullName);
    DirectoryInfo[] diarr = di.GetDirectories();
    foreach( DirectoryInfo dinf in diarr )
    {               
        Console.WriteLine("{0}",dinf.FullName);
        BrowsePrint(dinf.FullName);
    }
}