With a .NET webpage, if a SQLDatasource is updated programmatically, when does the SELECT become reexecuted? Say there is a button that inserts a new record. When the page reposts, the contents of the listbox remain unchanged. How do we reissue the SELECT so the contents of the listbox will be updated?

    Protected Sub cmdAdd_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdAdd.Click
        Dim sql As String = "INSERT into list_members (list_ID, personID) VALUES "
        sql += "(" & Session("CurrentList").ToString & "," & ListBox2.SelectedValue.ToString & ")"
        SqlDataSource3.InsertCommand = sql
        SqlDataSource3.Insert()
        SqlDataSource3.Select()       ' This line presents an error and may not belong
        ListBox3.DataBind()
    End Sub

Thanks