C# API强制关机、重启以及注销计算机

在Windows系统中有2种方式进行关机、重启以及注销计算机操作：
1、使用shutdown()命令；2、使用系统API；
以下是使用系统API进行操作的实例。
程序实例界面：
程序实例代码：
  1 using System;

  2 using System.Collections.Generic;

  3 using System.ComponentModel;

  4 using System.Data;

  5 using System.Drawing;

  6 using System.Text;

  7 using System.Windows.Forms;

  8

  9 using System.Runtime.InteropServices;

 10

 11

 12 namespace ShutDownSys

 13 {

 14     public partial class Form1 : Form

 15     {

 16         public Form1()

 17         {

 18             InitializeComponent();

 19         }

 20

 21         public class ShutDownSys

 22         {

 23             //C#关机代码

 24             //这个结构体将会传递给API。使用StructLayout

 25             //（...特性，确保其中成员是按顺序排列的，C#编译器不会对其进行调整）

 26             [StructLayout(LayoutKind.Sequential, Pack = 1)]

 27             internal struct TokPriv1Luid

 28             {

 29                 public int Count; public long Luid; public int Attr;

 30             }

 31

 32             //以下使用DLLImport特性导入了所需的Windows API。

 33             //导入这些方法必须是static extern的，并且没有方法体。

 34             //调用这些方法就相当于调用Windows API。

 35             [DllImport("kernel32.dll", ExactSpelling = true)]

 36             internal static extern IntPtr GetCurrentProcess();

 37

 38             [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]

 39             internal static extern bool OpenProcessToken(IntPtr h,int acc,ref IntPtr phtok);

 40

 41             [DllImport("advapi32.dll", SetLastError = true)]

 42             internal static extern bool LookupPrivilegeValueA

 43             (string host, string name, ref long pluid);

 44

 45             [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]

 46             internal static extern bool

 47             AdjustTokenPrivileges(IntPtr htok,bool disall,ref TokPriv1Luid newst,int len,IntPtr prev,IntPtr relen);

 48

 49             [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]

 50             internal static extern bool ExitWindowsEx(int flg,int rea);

 51

 52             //C#关机代码

 53             //以下定义了在调用WinAPI时需要的常数。

 54             //这些常数通常可以从Platform SDK的包含文件（头文件）中找到。

 55             public const int SE_PRIVILEGE_ENABLED = 0x00000002;

 56             public const int TOKEN_QUERY = 0x00000008;

 57             public const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;

 58             public const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";

 59             public const int EWX_LOGOFF = 0x00000000;

 60             public const int EWX_SHUTDOWN = 0x00000001;

 61             public const int EWX_REBOOT = 0x00000002;

 62             public const int EWX_FORCE = 0x00000004;

 63             public const int EWX_POWEROFF = 0x00000008;

 64             public const int EWX_FORCEIFHUNG = 0x00000010;

 65             // 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。

 66

 67

 68             public static void DoExitWin(int flg)

 69             {

 70                 bool ok;

 71                 TokPriv1Luid tp;

 72                 IntPtr hproc = GetCurrentProcess();

 73                 IntPtr htok = IntPtr.Zero;

 74                 ok = OpenProcessToken(hproc,TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY,ref htok);

 75                 tp.Count = 1;

 76                 tp.Luid = 0;

 77                 tp.Attr = SE_PRIVILEGE_ENABLED;

 78                 ok = LookupPrivilegeValueA(null,SE_SHUTDOWN_NAME,ref tp.Luid);

 79                 ok = AdjustTokenPrivileges(htok,false,ref tp,0,IntPtr.Zero,IntPtr.Zero);

 80                 ok = ExitWindowsEx(flg,0);

 81             }

 82         }

 83

 84         //调用

 85         public void Reboot()

 86         {

 87             ShutDownSys.DoExitWin(ShutDownSys.EWX_FORCE | ShutDownSys.EWX_REBOOT);

 88         }

 89

 90         public void ShutDown()

 91         {

 92             ShutDownSys.DoExitWin(ShutDownSys.EWX_FORCE | ShutDownSys.EWX_POWEROFF);

 93         }

 94

 95         public void LogOff()

 96         {

 97             ShutDownSys.DoExitWin(ShutDownSys.EWX_FORCE | ShutDownSys.EWX_LOGOFF);

 98         }

 99

100         //关机

101         private void button1_Click(object sender, EventArgs e)

102         {

103             ShutDown();

104         }

105

106         //重启

107         private void button2_Click(object sender, EventArgs e)

108         {

109             Reboot();

110         }

111

112         //注销

113         private void button3_Click(object sender, EventArgs e)

114         {

115             LogOff();

116         }

117     }

118 }
巴特西

C# API强制关机、重启以及注销计算机

最新文章

热门文章
