使用C#实现的定时器，可以定时windows关机、注销、重启，时间由用户自定包括系统小托盘，程序如有不足的地方，还请升级（我的 邮箱：xiaodpro@163.com）-Use C# to achieve timer, timing windows can be shut down, log off, restart, the time set by the user including the system of small tray, the program, if insufficie