Protected Overrides Sub OnKeyDown(ByVal e As System.Windows.Forms.KeyEventArgs)
        'Cursor-nach-unten, dann...
        If e.KeyCode = Keys.Down Then
            If Not Me.DroppedDown Then
                '...Dropdown-Bereich öffnen
                Me.DroppedDown = True
 
                e.Handled = True
            End If
        Else
            ' *1
            If Not e.KeyCode = Keys.Enter Then
                MyBase.OnKeyDown(e)
            Else
                Me.SelectNextControl(Me, True, True, False, True)
                e.Handled = True         
            End If
end sub

Gru?

Martin