public TLichsuHieuchinhDonthuocChitietCollection FetchAll()
 {
     TLichsuHieuchinhDonthuocChitietCollection coll = new TLichsuHieuchinhDonthuocChitietCollection();
     Query qry = new Query(TLichsuHieuchinhDonthuocChitiet.Schema);
     coll.LoadAndCloseReader(qry.ExecuteReader());
     return coll;
 }
 public TLichsuHieuchinhDonthuocChitietCollection FetchByQuery(Query qry)
 {
     TLichsuHieuchinhDonthuocChitietCollection coll = new TLichsuHieuchinhDonthuocChitietCollection();
     coll.LoadAndCloseReader(qry.ExecuteReader());
     return coll;
 }
 public TLichsuHieuchinhDonthuocChitietCollection FetchByID(object IdHieuchinh)
 {
     TLichsuHieuchinhDonthuocChitietCollection coll = new TLichsuHieuchinhDonthuocChitietCollection().Where("id_hieuchinh", IdHieuchinh).Load();
     return coll;
 }