C#开发的通讯录系统，内容较全，实现功能较多。负责维护数据库的信息，具备了比较完善的数据库维护功能。数据库的备份以及连接数据库的文件在原码文件中，运行前请注意设置-C# developers address book system, than the whole, to achieve more functional. Responsible for maintaining the database, with the database maintenance functions. Backup