C# 快速关机代码

今天用到这个，网上找个不错的，保存下来。

注意：这个方法是快速关机，不会保存你的任何未保存信息。

// 这个结构体将会传递给API。使用StructLayout [StructLayout(LayoutKind.Sequential, Pack = 1)] internal struct TokPriv1Luid { public int Count; public long Luid; public int Attr; } // 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 LookupPrivilegeValue(string host, string name, ref long pluid); [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)] internal static extern bool AdjustTokenPrivileges(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); // 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 internal const int SE_PRIVILEGE_ENABLED = 0x00000002; internal const int TOKEN_QUERY = 0x00000008; internal const int TOKEN_ADJUST_PRIVILEGES = 0x00000020; internal const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege"; internal const int EWX_SHUTDOWN = 0x00000001; //internal const int EWX_LOGOFF = 0x00000000; //internal const int EWX_REBOOT = 0x00000002; //internal const int EWX_FORCE = 0x00000004; //internal const int EWX_POWEROFF = 0x00000008; //internal 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。 private 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 = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid); ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero); ok = ExitWindowsEx(flg, 0); }/// <summary> /// 关机按钮 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnShutDown_Click(object sender, EventArgs e) { DialogResult dr = MessageBox.Show(@"确定要关机吗？请保存信息后按'是'，不关机按'否'", "提示信息", MessageBoxButtons.YesNo, MessageBoxIcon.Information); if (dr == DialogResult.Yes) { CommonClass.DoExitWin(CommonClass.EWX_SHUTDOWN); } }

 

转载自：http://hi.baidu.com/youzhch/blog/item/215a1e4a5ee56f2009f7efd9.html