2 listbox to exchange value with DBML

Question

Hi, i'have two Listbox. the think is i do the transfert like : click on field in the left listbox, hit "move right" button and it wll display in the right list box.' The other think it's the first Listbox is bind on Dataset and the second on Entity (Linq-to sql). So when i click on the move next i do that :

Dim newSite As New List(Of vw_SiteList)

        For Each row As SitesDataset.FDDSTRow In SiteAdsListBox.SelectedItems
            newSite.Add(New vw_SiteList With { _
                        .SITECODE = row.DEST_COD, _
                        .SiteDisplay = row.SiteDisplay, _
                        .CREATEDBY = Environment.GetEnvironmentVariable("USERNAM"), _
                        .DATECREATED = Now _
                        })

        Next
JCDataContext.vw_SiteLists.InsertAllOnSubmit(NewSite)

I would like to see now the new field in the right listbox but it isn't there because the field itr's not yet added in the database.

How can i do that?

Thanks

Ju