Sub GetFiles(ByVal path As String, ByVal pattern As String, ByRef arr As _
      ArrayList)
        arr.AddRange(IO.Directory.GetFiles(path, pattern))
        For Each s As String In IO.Directory.GetDirectories(path)
            getFiles(s, pattern, arr)
            Application.DoEvents()
        Next
    End Sub
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles Button1.Click
        'AUFRUF
        Dim arr As New ArrayList
        Me.getFiles("C:\Windows", "*.*", arr)
        Me.ListBox1.Items.AddRange(CType(arr.ToArray(GetType(String)), String( _
          )))
    End Sub