public TThuocThuaCollection FetchAll()
 {
     TThuocThuaCollection coll = new TThuocThuaCollection();
     Query qry = new Query(TThuocThua.Schema);
     coll.LoadAndCloseReader(qry.ExecuteReader());
     return coll;
 }
 public TThuocThuaCollection FetchByQuery(Query qry)
 {
     TThuocThuaCollection coll = new TThuocThuaCollection();
     coll.LoadAndCloseReader(qry.ExecuteReader());
     return coll;
 }
 public TThuocThuaCollection FetchByID(object IdKho)
 {
     TThuocThuaCollection coll = new TThuocThuaCollection().Where("id_kho", IdKho).Load();
     return coll;
 }