为了方便的操作ADO，这里提供4个类：CADODatabase，CADORecordset，CADOParameter，CADOCommand ，下面对类的成员作一介绍-In order to facilitate the operation of ADO, here are four categories: CADODatabase, CADORecordset, CADOParameter, CADOCommand, the following members of the Class 1