DataBindings problem

[Al]

I'm trying to use ComboBox on Windows Form.
I create and set DataBinding and DataTable objects
I create a couple of Procedures:

Private Sub ClearBindings()
cbTakeOffPerson.DataBindings.Clear()
End Sub

Private Sub SetBindings()
With cbTakeOffPerson
.DataBindings.Add("SelectedValue", bdsJob, "TakeOffPersonID")
.DataSource = dtSalesman
.DisplayMember = "Salesman"
.ValueMember = "SalesmanID"
End With
End Sub

In Form_Load event I call both procedures. Although TakeOffPersonID in
bdsJob (DataBinding object) is not set to the first record in DataTable I
get the first Salesman in ComboBox. When I move through records, everything
starts to work properly. If I call both procedures twice then even after
form loads everything works.

What am I missing?

Al