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