using System.Runtime.InteropServices;
　　[Flags]
　　public enum ExitWindows : uint
　　{
　　LogOff = 0x00, //注销
　　ShutDown = 0x01, //关机
　　Reboot = 0x02, //重启
　　Force = 0x04,
　　PowerOff = 0x08,
　　ForceIfHung = 0x10
　　}
　　[Flags]
　　public enum ShutdownReason : uint
　　{
　　MajorApplication = 0x00040000,
　　MajorHardware = 0x00010000,
　　MajorLegacyApi = 0x00070000,
　　MajorOperatingSystem = 0x00020000,
　　MajorOther = 0x00000000,
　　MajorPower = 0x00060000,
　　MajorSoftware = 0x00030000,
　　MajorSystem = 0x00050000,
　　MinorBlueScreen = 0x0000000F,
　　MinorCordUnplugged = 0x0000000b,
　　MinorDisk = 0x00000007,
　　MinorEnvironment = 0x0000000c,
　　MinorHardwareDriver = 0x0000000d,
　　MinorHotfix = 0x00000011,
　　MinorHung = 0x00000005,
　　MinorInstallation = 0x00000002,
　　MinorMaintenance = 0x00000001,
　　MinorMMC = 0x00000019,
　　MinorNetworkConnectivity = 0x00000014,
　　MinorNetworkCard = 0x00000009,
　　MinorOther = 0x00000000,
　　MinorOtherDriver = 0x0000000e,
　　MinorPowerSupply = 0x0000000a,
　　MinorProcessor = 0x00000008,
　　MinorReconfig = 0x00000004,
　　MinorSecurity = 0x00000013,
　　MinorSecurityFix = 0x00000012,
　　MinorSecurityFixUninstall = 0x00000018,
　　MinorServicePack = 0x00000010,
　　MinorServicePackUninstall = 0x00000016,
　　MinorTermSrv = 0x00000020,
　　MinorUnstable = 0x00000006,
　　MinorUpgrade = 0x00000003,
　　MinorWMI = 0x00000015,
　　FlagUserDefined = 0x40000000,
　　FlagPlanned = 0x80000000
　　}
　　[DllImport("user32.dll")]
　　static extern bool ExitWindowsEx(ExitWindows uFlags, ShutdownReason dwReason);
　　[STAThread]
　　static void Main(string[] args)
　　{
　　ExitWindowsEx(ExitWindows.LogOff, ShutdownReason.MajorOther & ShutdownReason.MinorOther);
　　//这个语句将实现计算机注销操作
　　}