// X:\jsc.svn\examples\javascript\forms\Test\TestSQLJoin\TestSQLJoin\ApplicationControl.cs

        //[Obsolete("we want to be able to write from x in source")]
        public static IEnumerable <R> Select <R>(this BindingSource x, Func <DataRowView, R> f)
        {
            return(x.AsEnumerable().Select(f));
        }