Hmmm, the only thing that looks suspicious to me is that BindingContext.Postion should be equal to .Count - 1, not .Count, maybe that's the problem.



>No, Same effect.
>Maybe I have a misstake with the way I add the new record, see this when I click "Add" button:
>
>Private Sub btnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click
>pbbolAddNew = True
>
>myDA.InsertCommand = myCB.GetInsertCommand
>
>With BindingContext(myDS, "Company")
> .AddNew()
> .Position = .Count
> cbSelect.SelectedIndex = .Count - 1
>End With
>End Sub
>
>Then I'll be in the window form to type in the data, then click the "Save" button which take the effect I mentioned down.
>
>Does this way effect my problem ?
>
>