The backend function modules include: channel management, role management, user management, content management, project news project progress, bulletin board, opinion book system, configuration, news management system (code worth learning for beginners), I came from the book to practice the code; I personally think it has certain reference value for beginners. Under App_Data is the Sql2005 database. This database does not need to be attached (it is called using a trust mechanism). You can use it directly. The background management address is: /admin/AdminLogin.aspx. The default account/password is: admin/admin.