Hi John, Thanks for your reply. The INSERT is working OK. I have verified that. SOmeone else helped with the error on line 6. Here's my current version.

    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(DataSourceSelectArguments.Empty)
        ListBox3.DataBind()
        lblOwner.Text = sql
    End Sub

but I still don't see the new data unless I move to a different page and then come back.

>Hi Don,
>
>On repost, the contents should automatically be OK assuming that the Insert was successful. Try trapping the results of the Insert to ensure that it's working.
>
>>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