这是自己做的一个小东西，用了公共类的编写，用access存储数据，还用到导出学生作业完成信息到xls， 后台地址是admin 用户名密码均为51aspx 前台测试登陆学号是51 密码是51aspx-This is a small thing to do their own, with the preparation of public class, data storage with access, is also used in deriving the students work