how to reboot, or shutdown the computer ?

[Herbert VON GRÜNENWALD]

in c++ it was ExitWindowsEx()

thanks

[Lebesgue]

In C#, it is still the same ExitWindowsEx API call.

class Class1
{
[DllImport("user 32.dll")]
static extern bool ExitWindowsEx(u int uFlags, uint
dwReason);

[STAThread]
static void Main(string[] args)
{
ExitWindowsEx(1 , 0); //this will cause the system to
shut down.
}
}

uFlags
4 = Force any applications to quit instead of prompting the user to close
them.
0 = Log off the network.
8 = Shut down the system and, if possible, turn the computer off.
2 = Perform a full reboot of the system.
1 = Shut down the system.
"Herbert VON GRÜNENWALD" <he************ *******@microso ft.com> wrote in
message news:OI******** ******@TK2MSFTN GP09.phx.gbl...

in c++ it was ExitWindowsEx()

thanks

[Herbert VON GRÜNENWALD]

Lebesgue wrote:

In C#, it is still the same ExitWindowsEx API call.

class Class1
{
[DllImport("user 32.dll")]
static extern bool ExitWindowsEx(u int uFlags, uint
dwReason);

[STAThread]
static void Main(string[] args)
{
ExitWindowsEx(1 , 0); //this will cause the system to
shut down.
}
}

uFlags
4 = Force any applications to quit instead of prompting the user to close
them.
0 = Log off the network.
8 = Shut down the system and, if possible, turn the computer off.
2 = Perform a full reboot of the system.
1 = Shut down the system.
"Herbert VON GRÜNENWALD" <he************ *******@microso ft.com> wrote in
message news:OI******** ******@TK2MSFTN GP09.phx.gbl...

in c++ it was ExitWindowsEx()

thanks

thanks

so there is no C# class that encapsulates this API ?

[Nicholas Paldino [.NET/C# MVP]]

Herbert,

No, there is not. You could use the classes in the System.Manageme nt
namespace and access the method on the WMI class, but it is just as
roundabout as using the function through the P/Invoke layer.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Herbert VON GRÜNENWALD" <he************ *******@microso ft.com> wrote in
message news:42******** ******@microsof t.com...

Lebesgue wrote:

In C#, it is still the same ExitWindowsEx API call.

class Class1
{
[DllImport("user 32.dll")]
static extern bool ExitWindowsEx(u int uFlags, uint
dwReason);

[STAThread]
static void Main(string[] args)
{
ExitWindowsEx(1 , 0); //this will cause the system
to
shut down.
}
}

uFlags
4 = Force any applications to quit instead of prompting the user to
close
them.
0 = Log off the network.
8 = Shut down the system and, if possible, turn the computer off.
2 = Perform a full reboot of the system.
1 = Shut down the system.
"Herbert VON GRÜNENWALD" <he************ *******@microso ft.com> wrote in
message news:OI******** ******@TK2MSFTN GP09.phx.gbl...

in c++ it was ExitWindowsEx()

thanks

thanks

so there is no C# class that encapsulates this API ?

[Willy Denoyette [MVP]]

"Herbert VON GRÜNENWALD" <he************ *******@microso ft.com> wrote in
message news:42******** ******@microsof t.com...

Lebesgue wrote:

In C#, it is still the same ExitWindowsEx API call.

class Class1
{
[DllImport("user 32.dll")]
static extern bool ExitWindowsEx(u int uFlags, uint
dwReason);

[STAThread]
static void Main(string[] args)
{
ExitWindowsEx(1 , 0); //this will cause the system
to
shut down.
}
}

uFlags
4 = Force any applications to quit instead of prompting the user to
close
them.
0 = Log off the network.
8 = Shut down the system and, if possible, turn the computer off.
2 = Perform a full reboot of the system.
1 = Shut down the system.
"Herbert VON GRÜNENWALD" <he************ *******@microso ft.com> wrote in
message news:OI******** ******@TK2MSFTN GP09.phx.gbl...

in c++ it was ExitWindowsEx()

thanks

thanks

so there is no C# class that encapsulates this API ?

Yes there is, you could use System.Manageme nt classes and the WMI class
Win32_Operating System.

public static void Main() {
ManagementBaseO bject outParams = null;
ManagementClass os = new ManagementClass ("Win32_Operati ngSystem");
os.Get();
os.Scope.Option s.EnablePrivile ges = true; // enables required security
privilege.
ManagementBaseO bject inParams = os.GetMethodPar ameters("Win32S hutdown");
inParams["Flags"] = "1"; // System shutdown
inParams["Reserved"] = "0";
foreach (ManagementObje ct mo in os.GetInstances ())
outParams = mo.InvokeMethod ("Win32Shutdown ",
inParams, null);

Willy.

[Willy Denoyette [MVP]]

"Lebesgue" <no****@spam.jp > wrote in message
news:e5******** ******@TK2MSFTN GP12.phx.gbl...

In C#, it is still the same ExitWindowsEx API call.

class Class1
{
[DllImport("user 32.dll")]
static extern bool ExitWindowsEx(u int uFlags, uint
dwReason);

[STAThread]
static void Main(string[] args)
{
ExitWindowsEx(1 , 0); //this will cause the system
to
shut down.
}
}

uFlags
4 = Force any applications to quit instead of prompting the user to close
them.
0 = Log off the network.
8 = Shut down the system and, if possible, turn the computer off.
2 = Perform a full reboot of the system.
1 = Shut down the system.
"Herbert VON GRÜNENWALD" <he************ *******@microso ft.com> wrote in
message news:OI******** ******@TK2MSFTN GP09.phx.gbl...

in c++ it was ExitWindowsEx()

thanks

Did you test your code? If you actualy did you would have noticed that this
doesn't work.
The reason is simple, you have to enable the "SeShutdown " privilege using
PInvoke, something more complicated than calling ExitWindowsEx.

Willy.

[Willy Denoyette [MVP]]

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard .caspershouse.c om> wrote in
message news:e3******** ******@tk2msftn gp13.phx.gbl...

Herbert,

No, there is not. You could use the classes in the System.Manageme nt
namespace and access the method on the WMI class, but it is just as
roundabout as using the function through the P/Invoke layer.

Hope this helps.

Nicholas ,

I have to disagree, because the simple PInvoke snip is not enough to invoke
a shutdown, you need to enable the SeShutdown privilege for this to work,
and this is non-trivial using PInvoke. System.Manageme nt is definitely the
way to go.

Willy.