public TPhieutrathuocthuaCollection FetchAll()
 {
     TPhieutrathuocthuaCollection coll = new TPhieutrathuocthuaCollection();
     Query qry = new Query(TPhieutrathuocthua.Schema);
     coll.LoadAndCloseReader(qry.ExecuteReader());
     return coll;
 }
 public TPhieutrathuocthuaCollection FetchByQuery(Query qry)
 {
     TPhieutrathuocthuaCollection coll = new TPhieutrathuocthuaCollection();
     coll.LoadAndCloseReader(qry.ExecuteReader());
     return coll;
 }
 public TPhieutrathuocthuaCollection FetchByID(object Id)
 {
     TPhieutrathuocthuaCollection coll = new TPhieutrathuocthuaCollection().Where("Id", Id).Load();
     return coll;
 }