从C#程序关闭计算机的最佳方法是什么？
我发现了一些有效的方法 - 我会在下面发布它们 - 但它们都不是很优雅.我正在寻找更简单和原生的东西.net.
从Windows XP开始,在win 2000或更低版本中不可用:
这是最快的方法:
Process.Start("shutdown","/s /t 0");
否则像其他人一样使用P/Invoke或WMI说.
编辑:如何避免创建窗口
var psi = new ProcessStartInfo("shutdown","/s /t 0");
psi.CreateNoWindow = true;
psi.UseShellExecute = false;
Process.Start(psi);
摘自:Geekpedia帖子
此方法使用WMI关闭窗口.
您需要向项目添加对System.Management的引用才能使用它.
using System.Management;
void Shutdown()
{
ManagementBaseObject mboShutdown = null;
ManagementClass mcWin32 = new ManagementClass("Win32_OperatingSystem");
mcWin32.Get();
// You can't shutdown without security privileges
mcWin32.Scope.Options.EnablePrivileges = true;
ManagementBaseObject mboShutdownParams =
mcWin32.GetMethodParameters("Win32Shutdown");
// Flag 1 means we want to shut down the system. Use "2" to reboot.
mboShutdownParams["Flags"] = "1";
mboShutdownParams["Reserved"] = "0";
foreach (ManagementObject manObj in mcWin32.GetInstances())
{
mboShutdown = manObj.InvokeMethod("Win32Shutdown",
mboShutdownParams, null);
}
}
该线程提供了必要的代码:http://bytes.com/forum/thread251367.html
但这是相关的代码:
using System.Runtime.InteropServices;
[StructLayout(LayoutKind.Sequential, Pack=1)]
internal struct TokPriv1Luid
{
public int Count;
public long Luid;
public int Attr;
}
[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 );
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_LOGOFF = 0x00000000;
internal const int EWX_SHUTDOWN = 0x00000001;
internal const int EWX_REBOOT = 0x00000002;
internal const int EWX_FORCE = 0x00000004;
internal const int EWX_POWEROFF = 0x00000008;
internal const int EWX_FORCEIFHUNG = 0x00000010;
private 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 );
}
用法:
DoExitWin( EWX_SHUTDOWN );
要么
DoExitWin( EWX_REBOOT );
不同方法:
一个. System.Diagnostics.Process.Start("Shutdown", "-s -t 10");
B. Windows管理规范(WMI)
http://www.csharpfriends.com/Forums/ShowPost.aspx?PostID=36953
http://www.dreamincode.net/forums/showtopic33948.htm
C. System.Runtime.InteropServices Pinvoke
http://bytes.com/groups/net-c/251367-shutdown-my-computer-using-c
D.系统管理
http://www.geekpedia.com/code36_Shut-down-system-using-Csharp.html
在我提交之后,我看到很多其他人也发布了...
老派难看的方法.使用ExitWindowsExWin32 API中的函数.
using System.Runtime.InteropServices;
void Shutdown2()
{
const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";
const short SE_PRIVILEGE_ENABLED = 2;
const uint EWX_SHUTDOWN = 1;
const short TOKEN_ADJUST_PRIVILEGES = 32;
const short TOKEN_QUERY = 8;
IntPtr hToken;
TOKEN_PRIVILEGES tkp;
// Get shutdown privileges...
OpenProcessToken(Process.GetCurrentProcess().Handle,
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, out hToken);
tkp.PrivilegeCount = 1;
tkp.Privileges.Attributes = SE_PRIVILEGE_ENABLED;
LookupPrivilegeValue("", SE_SHUTDOWN_NAME, out tkp.Privileges.pLuid);
AdjustTokenPrivileges(hToken, false, ref tkp, 0U, IntPtr.Zero,
IntPtr.Zero);
// Now we have the privileges, shutdown Windows
ExitWindowsEx(EWX_SHUTDOWN, 0);
}
// Structures needed for the API calls
private struct LUID
{
public int LowPart;
public int HighPart;
}
private struct LUID_AND_ATTRIBUTES
{
public LUID pLuid;
public int Attributes;
}
private struct TOKEN_PRIVILEGES
{
public int PrivilegeCount;
public LUID_AND_ATTRIBUTES Privileges;
}
[DllImport("advapi32.dll")]
static extern int OpenProcessToken(IntPtr ProcessHandle,
int DesiredAccess, out IntPtr TokenHandle);
[DllImport("advapi32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool AdjustTokenPrivileges(IntPtr TokenHandle,
[MarshalAs(UnmanagedType.Bool)]bool DisableAllPrivileges,
ref TOKEN_PRIVILEGES NewState,
UInt32 BufferLength,
IntPtr PreviousState,
IntPtr ReturnLength);
[DllImport("advapi32.dll")]
static extern int LookupPrivilegeValue(string lpSystemName,
string lpName, out LUID lpLuid);
[DllImport("user32.dll", SetLastError = true)]
static extern int ExitWindowsEx(uint uFlags, uint dwReason);
在生产代码中,您应该检查API调用的返回值,但我将其留下以使示例更清晰.
简短又甜蜜.调用外部程序:
using System.Diagnostics;
void Shutdown()
{
Process.Start("shutdown.exe", "-s -t 00");
}
注意:这会调用Windows的Shutdown.exe程序,因此只有在该程序可用时它才会起作用.您可能在Windows 2000(其中shutdown.exe仅在资源工具包中可用)或XP Embedded中遇到问题.
System.Diagnostics.Process.Start("shutdown", "/s /t 0")
应该管用.
重新启动时,它是/ r
这将直接和干净地重新启动PC盒,没有对话框.
您可以启动关机过程:
shutdown -s -t 0 - 关掉
shutdown -r -t 0 - 重新开始
请注意，这shutdown.exe只是一个包装器InitiateSystemShutdownEx，它提供了一些缺少的细节ExitWindowsEx
我在尝试使用上面接受的WMI方法时遇到了麻烦,因为尽管以管理员身份运行程序,但我始终没有保留异常.
解决方案是让流程为自己请求权限.我在http://www.dotnet247.com/247reference/msgs/58/292150.aspx上找到了一个名叫Richard Hill的人写的答案.
我已经粘贴了我对他的解决方案的基本用法,以防链接变旧.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Management;
using System.Runtime.InteropServices;
using System.Security;
using System.Diagnostics;
namespace PowerControl
{
public class PowerControl_Main
{
public void Shutdown()
{
ManagementBaseObject mboShutdown = null;
ManagementClass mcWin32 = new ManagementClass("Win32_OperatingSystem");
mcWin32.Get();
if (!TokenAdjuster.EnablePrivilege("SeShutdownPrivilege", true))
{
Console.WriteLine("Could not enable SeShutdownPrivilege");
}
else
{
Console.WriteLine("Enabled SeShutdownPrivilege");
}
// You can't shutdown without security privileges
mcWin32.Scope.Options.EnablePrivileges = true;
ManagementBaseObject mboShutdownParams = mcWin32.GetMethodParameters("Win32Shutdown");
// Flag 1 means we want to shut down the system
mboShutdownParams["Flags"] = "1";
mboShutdownParams["Reserved"] = "0";
foreach (ManagementObject manObj in mcWin32.GetInstances())
{
try
{
mboShutdown = manObj.InvokeMethod("Win32Shutdown",
mboShutdownParams, null);
}
catch (ManagementException mex)
{
Console.WriteLine(mex.ToString());
Console.ReadKey();
}
}
}
}
public sealed class TokenAdjuster
{
// PInvoke stuff required to set/enable security privileges
[DllImport("advapi32", SetLastError = true),
SuppressUnmanagedCodeSecurityAttribute]
static extern int OpenProcessToken(
System.IntPtr ProcessHandle, // handle to process
int DesiredAccess, // desired access to process
ref IntPtr TokenHandle // handle to open access token
);
[DllImport("kernel32", SetLastError = true),
SuppressUnmanagedCodeSecurityAttribute]
static extern bool CloseHandle(IntPtr handle);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern int AdjustTokenPrivileges(
IntPtr TokenHandle,
int DisableAllPrivileges,
IntPtr NewState,
int BufferLength,
IntPtr PreviousState,
ref int ReturnLength);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern bool LookupPrivilegeValue(
string lpSystemName,
string lpName,
ref LUID lpLuid);
[StructLayout(LayoutKind.Sequential)]
internal struct LUID
{
internal int LowPart;
internal int HighPart;
}
[StructLayout(LayoutKind.Sequential)]
struct LUID_AND_ATTRIBUTES
{
LUID Luid;
int Attributes;
}
[StructLayout(LayoutKind.Sequential)]
struct _PRIVILEGE_SET
{
int PrivilegeCount;
int Control;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)] // ANYSIZE_ARRAY = 1
LUID_AND_ATTRIBUTES[] Privileges;
}
[StructLayout(LayoutKind.Sequential)]
internal struct TOKEN_PRIVILEGES
{
internal int PrivilegeCount;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
internal int[] Privileges;
}
const int SE_PRIVILEGE_ENABLED = 0x00000002;
const int TOKEN_ADJUST_PRIVILEGES = 0X00000020;
const int TOKEN_QUERY = 0X00000008;
const int TOKEN_ALL_ACCESS = 0X001f01ff;
const int PROCESS_QUERY_INFORMATION = 0X00000400;
public static bool EnablePrivilege(string lpszPrivilege, bool
bEnablePrivilege)
{
bool retval = false;
int ltkpOld = 0;
IntPtr hToken = IntPtr.Zero;
TOKEN_PRIVILEGES tkp = new TOKEN_PRIVILEGES();
tkp.Privileges = new int[3];
TOKEN_PRIVILEGES tkpOld = new TOKEN_PRIVILEGES();
tkpOld.Privileges = new int[3];
LUID tLUID = new LUID();
tkp.PrivilegeCount = 1;
if (bEnablePrivilege)
tkp.Privileges[2] = SE_PRIVILEGE_ENABLED;
else
tkp.Privileges[2] = 0;
if (LookupPrivilegeValue(null, lpszPrivilege, ref tLUID))
{
Process proc = Process.GetCurrentProcess();
if (proc.Handle != IntPtr.Zero)
{
if (OpenProcessToken(proc.Handle, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
ref hToken) != 0)
{
tkp.PrivilegeCount = 1;
tkp.Privileges[2] = SE_PRIVILEGE_ENABLED;
tkp.Privileges[1] = tLUID.HighPart;
tkp.Privileges[0] = tLUID.LowPart;
const int bufLength = 256;
IntPtr tu = Marshal.AllocHGlobal(bufLength);
Marshal.StructureToPtr(tkp, tu, true);
if (AdjustTokenPrivileges(hToken, 0, tu, bufLength, IntPtr.Zero, ref ltkpOld) != 0)
{
// successful AdjustTokenPrivileges doesn't mean privilege could be changed
if (Marshal.GetLastWin32Error() == 0)
{
retval = true; // Token changed
}
}
TOKEN_PRIVILEGES tokp = (TOKEN_PRIVILEGES)Marshal.PtrToStructure(tu,
typeof(TOKEN_PRIVILEGES));
Marshal.FreeHGlobal(tu);
}
}
}
if (hToken != IntPtr.Zero)
{
CloseHandle(hToken);
}
return retval;
}
}
}
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