VB连接数据库，显示数据库中的内容并修改内容，练习VB更新数据库的一个操作，测试前请先准备好Access数据库，本示例中未包括数据库文件。代码中的错误处理需要说明：错误处理程序代码置于此处，想要忽略错误注释掉下一行，想要捕获它们在此添加代码以进行处理-VB connect to the database, display and modify the contents of the database contents, exercises an operating VB database updates, please be ready before testing the Access database, this example does not include the database file. Error handling code should be noted: the error handler code in here, you want to ignore the error comment out the next line, you want to capture them in this add code for processing