Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As _
  System.EventArgs) Handles Timer1.Tick
        ' nach sekunden zählen
        lSeconds = lSeconds + 1
        ' 1000 ms = 1 sec
        If lSeconds >= dif Then
            Timer1.Enabled = False
            Const NULL As String = ""
            [u]Shutdown.getShutdownPrivileges()
            [u]Shutdown.InitiateSystemShutdown(NULL, "Shutdown", 0, True, _
              True)
            End
        End If