Using Telerik RadGrid - Codebehind - Subsonic

The following code is required in to populate the grid using subsonic:

        using Telerik.Web.UI;
...
        protected void rgCatalogs_NeedDataSource(object source, GridNeedDataSourceEventArgs e)
        {
            Query qry = SalesCatalog.CreateQuery();
            rgCatalogs.DataSource = qry.ExecuteDataSet();
        }