Avast今天宣布旗下的防病毒软件不再继续支持Windows XP和Vista系统，新版本仅兼容Windows 7及更高版本。在今天发表的博文中，公司从2019年1月1日开始不更新WindowsXP和Vista系统的病毒防治产品，但病毒库定期更新。
I\'m building开发者_运维问答 an ASP.NET MVC2 Web Application that requires some sophisticated authentication and business logic that cannot be achieved using the out of the box forms authentication.
Let\'s assume that our system can perform actions, and that an action requires some parameters to do its work.
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