用Data控件建立与数据库的连接，并在连接的基础上在相应的绑定控件中实时显示数据库中的数据，通过操作实现数据库中数据追加、修改、删除和查询。-To establish a connection to the database Data Controls and connections on the basis of data in the database is displayed in real time in the corresponding bound control, the operation achieved by additional data in the database, modify, delete, and query.