public QheNhanvienKhoCollection FetchByQuery(Query qry)
        {
            QheNhanvienKhoCollection coll = new QheNhanvienKhoCollection();

            coll.LoadAndCloseReader(qry.ExecuteReader());
            return(coll);
        }
        public QheNhanvienKhoCollection FetchAll()
        {
            QheNhanvienKhoCollection coll = new QheNhanvienKhoCollection();
            Query qry = new Query(QheNhanvienKho.Schema);

            coll.LoadAndCloseReader(qry.ExecuteReader());
            return(coll);
        }