How to shutdown a computer in c#

The source codes seem like working only for Window OS 32bit, but 64 bit works perfectly The only problem is "privilege" That's the problem. we must run this application as an administration

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01.ManagementBaseObject mboShutdown = null;

02.ManagementClass mcWin32 = new ManagementClass("Win32_OperatingSystem");

03.mcWin32.Get();

04.mcWin32.Scope.Options.EnablePrivileges = true;      // get security privileges

05.ManagementBaseObject mboShutdownParams = mcWin32.GetMethodParameters("Win32Shutdown");

06.mboShutdownParams["Flags"] = "1";

07.mboShutdownParams["Reserved"] = "0";

08.foreach (ManagementObject manObj in mcWin32.GetInstances())

09.{

10.    mboShutdown = manObj.InvokeMethod("Win32Shutdown", mboShutdownParams, null);

11.}

12.break;