This code shut downs the operating system using the System.Management assembly, but not before obtaining the required security privileges.

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. // Remember to add a reference to the System.Management assembly
9. using System.Management;
10.
11. namespace ShutDown
12. {
13.     public partial class Form1 : Form
14.     {
15.        public Form1()
16.        {
17.            InitializeComponent();
18.        }
19.
20.        private void btnShutDown_Click(object sender, EventArgs e)
21.       {
22.            ManagementBaseObject mboShutdown = null;
23.            ManagementClass mcWin32 = new ManagementClass("Win32_OperatingSystem");
24.            mcWin32.Get();
25.            // You can't shutdown without security privileges
26.            mcWin32.Scope.Options.EnablePrivileges = true;
27.            ManagementBaseObject mboShutdownParams = mcWin32.GetMethodParameters("Win32Shutdown");
28.            // Flag 1 means we want to shut down the system
29.            mboShutdownParams["Flags"] = "1";
30.            mboShutdownParams["Reserved"] = "0";
31.            foreach (ManagementObject manObj in mcWin32.GetInstances())
32.            {
33.                mboShutdown = manObj.InvokeMethod("Win32Shutdown", mboShutdownParams, null);
34.            }
35.        }
36.    }
37.}