可以对用户注册，登陆后可以添加通讯录，修改用户密码，查看、修改通讯录信息等操作。在VS2005、SQL2005、windows server 2003下测试通过-Users can be registered, after landing you can add contacts, change user passwords, view, modify the address book information and other operations. In VS2005, SQL2005, w