也是初学VB时做的，现在看来比较简陋，实现了图书管理的最基本功能，添加，修改，删除图书编号，信息等，适合初学者模仿。-VB is also a beginner when done, it seems relatively simple to achieve the most basic function of library management, add, modify, delete, book number, and information for beginners to imitat