C#强制关机 重启以及注销计算机

using System;using System.Collections.Generic;using System.Text;using System.Runtime.InteropServices;namespace CommonDLL{public class ShutDownSys{//C#关机代码// 这个结构体将会传递给API。使用StructLayout//(...特性，确保其中的成员是按顺序排列的，C#编译器不会对其进行调整。[StructLayout(LayoutKind.Sequential, Pack = 1)]internal struct TokPriv1Luid{public int Count; public long Luid; public int Attr;}// 以下使用DllImport特性导入了所需的Windows API。// 导入的方法必须是static extern的，并且没有方法体。//调用这些方法就相当于调用Windows API。[DllImport("kernel32.dll", ExactSpelling = true)]internal static extern IntPtr GetCurrentProcess();[DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]internal static extern bool OpenProcessToken(IntPtr h, int acc, ref IntPtr phtok);[DllImport("advapi32.dll", SetLastError = true)]internal static extern bool LookupPrivilegeValueA(string host, string name, ref long pluid);[DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]internal static extern boolAdjustTokenPrivileges(IntPtr htok, bool disall, ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen);[DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]internal static extern bool ExitWindowsEx(int flg, int rea);//C#关机代码// 以下定义了在调用WinAPI时需要的常数。//这些常数通常可以从Platform SDK的包含文件（头文件）中找到public const int SE_PRIVILEGE_ENABLED = 0x00000002;public const int TOKEN_QUERY = 0x00000008;public const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;public const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";public const int EWX_LOGOFF = 0x00000000;public const int EWX_SHUTDOWN = 0x00000001;public const int EWX_REBOOT = 0x00000002;public const int EWX_FORCE = 0x00000004;public const int EWX_POWEROFF = 0x00000008;public const int EWX_FORCEIFHUNG = 0x00000010;// 通过调用WinAPI实现关机，主要代码再最后一行ExitWindowsEx //这调用了同名的WinAPI，正好是关机用的。//C#关机代码public static void DoExitWin(int flg){bool ok;TokPriv1Luid tp;IntPtr hproc = GetCurrentProcess();IntPtr htok = IntPtr.Zero;ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);tp.Count = 1;tp.Luid = 0;tp.Attr = SE_PRIVILEGE_ENABLED;ok = LookupPrivilegeValueA(null, SE_SHUTDOWN_NAME, ref tp.Luid);ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);ok = ExitWindowsEx(flg, 0);}<pre name="code" class="csharp"><span style="font-family: Arial, Helvetica, sans-serif;"> }</span>

}

调用：

<pre name="code" class="csharp">public void Reboot(){ShutDownSys.DoExitWin(ShutDownSys.EWX_FORCE | ShutDownSys.EWX_REBOOT);}public void ShutDown(){ShutDownSys.DoExitWin(ShutDownSys.EWX_FORCE | ShutDownSys.EWX_POWEROFF);}public void LogOff(){ShutDownSys.DoExitWin(ShutDownSys.EWX_FORCE | ShutDownSys.EWX_LogOFF);}