C# - Windows herrunterfahren, ausloggen, neustarten

// using System.Diagnostics;

class Shutdown
{
    /// <summary>
    /// Windows restart
    /// </summary>
    public static void Restart()
    {
        StartShutDown("-f -r -t 5");
    }

    /// <summary>
    /// Log off.
    /// </summary>
    public static void LogOff()
    {
        StartShutDown("-l");
    }

    /// <summary>
    ///  Shutting Down Windows 
    /// </summary>
    public static void Shut()
    {
        StartShutDown("-f -s -t 5");
    }

    private static void StartShutDown(string param)
    {
        ProcessStartInfo proc = new ProcessStartInfo();
        proc.FileName = "cmd";
        proc.WindowStyle = ProcessWindowStyle.Hidden;
        proc.Arguments = "/C shutdown " + param;
        Process.Start(proc);
    }
}