After update on Combo box [Resolved]

[Oliver1]

Hi I have a combo box, which is bound to some data like so.

Private Sub getmaindropdata()
        Try
            Dim dacontcom As New SqlDataAdapter
            ds.Tables("ContactsCom").Clear()
            Dim spgetconcom As New SqlCommand("spgetconcom", sqlcon, Nothing)
 
            spgetconcom.CommandType = CommandType.StoredProcedure
 
            dacontcom.SelectCommand = spgetconcom
 
            sqlcon.Open()
            dacontcom.Fill(ds, "ContactsCom")
 
 
            sqlcon.Close()
 
            Me.cbocompany.DataSource = ds
            Me.cbocompany.DisplayMember = "ContactsCom.CompanyName"
            Me.cbocompany.ValueMember = "ContactsCom.ContactID"
 
        Catch ex As Exception
            MsgBox(ex.ToString)
 
        End Try
    End Sub

Now I can't quite get my head out of a VBA mindset, but basically how do I do the below in .net

Private Sub cbocompany_AfterUpdate()
popfields(me.cbocompany) ' me.cbocompany would give me the contactid
End Sub

As always any help would be very much appricated.