C#实现关机的两种方法
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C#实现关机的两种⽅法
1、使⽤shutdown关机命令来实现。
using System.Diagnostics;
int time = 3600; //单位为：秒
Process.Start("c:/windows/system32/shutdown.exe", "-s -t "+time);
ShutDown⽤法及参数（XP）
⽤法: shutdown [-i | -l | -s | -r | -a] [-f] [-m computername] [-t xx] [-c "comment"] [-d up:xx:yy]
没有参数 显⽰此消息(与 ? 相同)
-i 显⽰ GUI 界⾯，必须是第⼀个选项
-l 注销(不能与选项 -m ⼀起使⽤)
-s 关闭此计算机
-r 关闭并重启动此计算机
-a 放弃系统关机
-m computername 远程计算机关机/重启动/放弃
-t xx 设置关闭的超时为 xx 秒
-c "comment" 关闭注释(最⼤ 127 个字符)
-f 强制运⾏的应⽤程序关闭⽽没有警告
-d [ u ][p]:xx:yy 关闭原因代码
u 是⽤户代码
p 是⼀个计划的关闭代码
xx 是⼀个主要原因代码(⼩于 256 的正整数)
yy 是⼀个次要原因代码(⼩于 65536 的正整数)
-f：强⾏关闭应⽤程序
-m 计算机名：控制远程计算机
-i：显⽰图形⽤户界⾯，但必须是Shutdown的第⼀个选项
-l：注销当前⽤户
-r：关机并重启
-t时间：设置关机倒计时
-c "消息内容"：输⼊关机对话框中的消息内容(不能超127个字符）
具体使⽤⽅法可参考shutdown.exe的命令⾏指令。这种⽅法可在PC上使⽤，不过当系统为WINCE时，WINCE没有shutdown.exe，所
以该⽅法将不再使⽤。可⽤第⼆种⽅法。
2、调⽤WIN32 API来实现
1 using System;
2 using System.Collections.Generic;
3 using System.Text;
4 using System.Runtime.InteropServices;
5
6 namespace TestShutdown
7 {
8 class SystemUtil
9 {
10 [StructLayout(LayoutKind.Sequential, Pack = 1)]
11 internal struct TokPriv1Luid
12 {
13 public int Count;14 public long Luid;
15 public int Attr;
16 }
17
18 [DllImport("kernel32.dll", ExactSpelling = true)]
19 internal static extern IntPtr GetCurrentProcess();
20
21 [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
22 internal static extern bool OpenProcessToken(IntPtr h, int acc, ref IntPtr phtok);
23
24 [DllImport("advapi32.dll", SetLastError = true)]
25 internal static extern bool LookupPrivilegeValue(string host, string name, ref long pluid);
26
27 [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
28 internal static extern bool AdjustTokenPrivileges(IntPtr htok, bool disall, ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen);
29
30 [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
31 internal static extern bool ExitWindowsEx(int flg, int rea);
32
33 internal const int SE_PRIVILEGE_ENABLED = 0x00000002;
34 internal const int TOKEN_QUERY = 0x00000008;
35 internal const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
36 internal const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";
37 internal const int EWX_LOGOFF = 0x00000000;
38 internal const int EWX_SHUTDOWN = 0x00000001;
39 internal const int EWX_REBOOT = 0x00000002;
40 internal const int EWX_FORCE = 0x00000004;
41 internal const int EWX_POWEROFF = 0x00000008;
42 internal const int EWX_FORCEIFHUNG = 0x00000010;
43
44 private static void DoExitWin(int flg)
45 {
46 bool ok;
47 TokPriv1Luid tp;
48 IntPtr hproc = GetCurrentProcess();
49 IntPtr htok = IntPtr.Zero;
50 ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);
51 tp.Count = 1;
52 tp.Luid = 0;
53 tp.Attr = SE_PRIVILEGE_ENABLED;
54 ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid);
55 ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
56 ok = ExitWindowsEx(flg, 0);
57 }
58
59 public static void Reboot()
60 {
61 DoExitWin(EWX_FORCE | EWX_REBOOT); //重启
62 }
63
64 public static void PowerOff()
65 {
66 DoExitWin(EWX_FORCE | EWX_POWEROFF); //关机
67 }
68
69 public static void LogoOff()
70 {
71 DoExitWin(EWX_FORCE | EWX_LOGOFF); //注销
72 }
73
74 }
75
76 }
