Private Sub optionen_Click(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles optionen.Click
        admin.MdiParent = Me
        admin.Show()
    End Sub
 
    Private Sub ToolStripMenuItem3_Click(ByVal sender As System.Object, ByVal e _
      As System.EventArgs) Handles ToolStripMenuItem3.Click
        kd_stamm.MdiParent = Me
        kd_stamm.Show()
    End Sub

mfG.
Stephan