C#

using System;
using System.Management;

namespace DefragAnalysis
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                string scope = @"\\.\root\cimv2";
                string query = @"SELECT * FROM Win32_Volume WHERE Name = 'C:\\'";
                ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query);
                object[] outputArgs = new object[2];

                foreach (ManagementObject volume in searcher.Get())
                {
                    UInt32 result = (UInt32)volume.InvokeMethod("DefragAnalysis", outputArgs);

                    if (result == 0)
                    {
                        Console.WriteLine("Defrag Needed = {0}\n", outputArgs[0]);
                        ManagementBaseObject defragAnalysis = outputArgs[1] as ManagementBaseObject;

                        if (null != defragAnalysis)
                        {
                            foreach (PropertyData property in defragAnalysis.Properties)
                            {
                                Console.WriteLine("{0} = {1}", property.Name, property.Value);
                            }
                        }
                    }
                    else
                    {
                        Console.WriteLine("Method return code = 0x{0:X}", result);
                    }
                }
            }

            catch (Exception ex)
            {
                Console.WriteLine("Something bad happened.\n" + ex);
            }

            finally
            {
                Console.WriteLine("\npress any key to exit...");
                Console.ReadKey();
            }
        }
    }
}

EliottA wrote:

to be honest I don't know of another way, and if it exists I'm not sure it would be entirely safe to the machine.

ManagementClass mc = new ManagementClass("CIM_PowerSupply");
object[] methodArgs = { 6, null };//with 6 being to power off
object result = mc.InvokeMethod("SetPowerState", methodArgs);

//using System.Management;
        void Shutdown()
        {
            ManagementClass W32_OS = new ManagementClass("Win32_OperatingSystem");
            ManagementBaseObject inParams, outParams;
            int result;
            W32_OS.Scope.Options.EnablePrivileges = true;
            foreach (ManagementObject obj in W32_OS.GetInstances())
            {
                inParams = obj.GetMethodParameters("Win32Shutdown");
                inParams["Flags"] = ShutDown.ForcedShutdown;
                inParams["Reserved"] = 0;
                outParams = obj.InvokeMethod("Win32Shutdown", inParams, null);
                result = Convert.ToInt32(outParams["returnValue"]);
                if (result != 0) throw new Win32Exception(result);
            }
        }
        public enum ShutDown
        {
            LogOff = 0,
            Shutdown = 1,
            Reboot = 2,
            ForcedLogOff = 4,
            ForcedShutdown = 5,
            ForcedReboot = 6,
            PowerOff = 8,
            ForcedPowerOff = 12
        }

using(DataModel.DatabaseDataContext context = GetDatabaseContext()) {
   var result = from b in context.Branches
                where b.Id == id
                select b;
   foreach(Branch branch in result) {
      ...
   }
}