Neu-DetailsView per Button ein, nach Eing/Cancel aus

Protected Sub btnNewDevice_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnNewDevice.Click
DetailsView.Visible = True
btnNewDevice.Visible = False
DetailsView.DataBind()
End Sub

Protected Sub DetailsView_ItemCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DetailsViewCommandEventArgs) _
Handles DetailsView.ItemCommand
DetailsView.Visible = False
Me.btnNewDevice.Visible = True
End Sub