这是一款真正的免费杀毒软件，可以无限期地使用，升级方便。而且杀毒能力也不做。占内存小，运行快等优点。-This is a true free antivirus software, you can use indefinitely, easy to upgrade. And the ability to do anti-virus. Memory accounted for a small, run faster, etc..

c#写的一个非常简单的病毒程序。病毒的最大特点就是自我复制。-c# to write a very simple virus program. The virus is characterized by self-replication.