ADO数据控件及其相关应用

通过使用数据控件在vb环境下连接数据库，完成了以下功能：

（1）　　使用ADO控件实现对数据库文件的连接，双表查询功能，在绑定的控件中实时显示数据库中的数据，设置数据控件ADO属性为不可见，实现数据的逐条浏览，且禁止修改。

（2）　　在窗体上放置ADO控件和datagrid控件，完成按专业统计各专业的人数，按平均成绩统计前8名和按专业排列高数平均成绩的操作。

（3）　　使用数据窗体向导，构筑数据访问对话框，选定MSHFlexGrid数据网格窗体，主细表形式窗体。-ADO Data Control and its related applications through the use of data control in the vb environment, connect to the database, completed the following functions: (1) Using ADO control to realize the connection to the database file, double-table query functions in bound controls in real-time display the database data, set ADO data control property is not visible, to achieve the data one by one here, and the prohibition amendment. (2) in the form placed on ADO controls and datagrid control, completed according to the number of professional statisticians and professional, according to grade point average statistics before the 8 and arranged according to their professional operation of the high number of grade point average. (3) Use Data Form Wizard to build a Data Access dialog box, select MSHFlexGrid data grid form, the main form detailed form.