public NoitruPhieudieutriCollection FetchAll()
 {
     NoitruPhieudieutriCollection coll = new NoitruPhieudieutriCollection();
     Query qry = new Query(NoitruPhieudieutri.Schema);
     coll.LoadAndCloseReader(qry.ExecuteReader());
     return coll;
 }
 public NoitruPhieudieutriCollection FetchByQuery(Query qry)
 {
     NoitruPhieudieutriCollection coll = new NoitruPhieudieutriCollection();
     coll.LoadAndCloseReader(qry.ExecuteReader());
     return coll;
 }
 public NoitruPhieudieutriCollection FetchByID(object IdPhieudieutri)
 {
     NoitruPhieudieutriCollection coll = new NoitruPhieudieutriCollection().Where("id_phieudieutri", IdPhieudieutri).Load();
     return coll;
 }