Need help with error in ListView AfterLabelEdit event - how do I handle user bailing on renaming?

I have a mouse double click event for editing a selected item in a listview:

This code works fine:
    Private Sub lsvDevice_MouseDoubleClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles lsvDevice.MouseDoubleClick
        Dim ht As ListViewHitTestInfo = lsvDevice.HitTest(e.Location)
        If ht.Location = ListViewHitTestLocations.Label Then
            lsvDevice.LabelEdit = True
            ht.Item.BeginEdit()
        End If
    End Sub

Below  is my AfterLabelEdit Event. It works properly if the user does in fact rename the item. But if they bail on it by clicking on another item in the listview an error fires. See description beside the offending line below.

I am attempting to make sure that the user does not rename the item the same as another in the list. In other words, no duplicate listview items.

Thanks

PBLack


    Private Sub lsvDevice_AfterLabelEdit(ByVal sender As Object, ByVal e As System.Windows.Forms.LabelEditEventArgs) Handles lsvDevice.AfterLabelEdit

        lsvDevice.LabelEdit = False
        lsvDevice.FullRowSelect = True

        For Each itemDevice In lsvDevice.Items

            If itemDevice.Selected = False And itemDevice.Text = e.Label.ToString Then ' ERROR HERE NullReferenceException was unhandled. Object reference not set to an instance of an object.

                MsgBox("The new name is invalid as this would create a duplicate. Please revise.r")
                e.CancelEdit = True
                Exit Sub
            End If
        Next

        MsgBox("Looking good earl")
    End SubStart Free Trial