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