protected void rgStateTax_PreRender( object sender, EventArgs e )
    {
        if( rgStateTax.MasterTableView.IsItemInserted )
        {
            foreach( GridItem item in rgStateTax.Items )
            {
                item.Visible = false;
            }
        }

        if( rgStateTax.EditItems.Count > 0 )
        {
            foreach( GridDataItem item in rgStateTax.Items )
            {
                if( item != rgStateTax.EditItems[0] )
                {
                    item.Visible = false;
                }
            }
        }

ContentAdministrationServiceClient client = null;
        List<DCTaxRate> taxRate = null;
        try
        {
            client = new ContentAdministrationServiceClient();
            taxRate = client.GetTaxRatesByCountryIdAndLocationTypeName( locationId, "State" );
            client.Close();
        }
        catch( FaultException )
        {
            AbortClient(client);
            throw;
        }

        rgStateTax.DataSource = taxRate;
        rgStateTax.Rebind();

    }

return taxRates.ToList();
    }

    public void GetByCountryIdAndLoactionTypeName( long countryId, string locationTypeName )
    {
        IBOTaxRateCollection iboTaxRates = new BOTaxRateCollection();
        iboTaxRates.GetByCountryIdAndLocationTypeName( countryId, locationTypeName );

        SetItems( iboTaxRates );
    }

public void GetByCountryIdAndLocationTypeName( long countryId, string locationTypeName )
    {
        ISingleResult<TaxRate> taxRates = Database.TaxRateReadByCountryIdAndLocationTypeName( countryId, locationTypeName );
        PopulateCollection( taxRates );
    }

<asp:DropDownList ID="dd_bound" runat="server" AppendDataBoundItems="True">
    <asp:ListItem Value="" Text="Select one..." />
</asp:DropDownList>