//SHUT DOWN
        protected void btnShutDown_Click(object sender, EventArgs e)
        {            
            Process.Start("shutdown.exe", "-s"); // By Default the Shutdown will take place after 30 Seconds 
 
            //if you want to change the Delay try this one
            Process.Start("shutdown.exe","-s -t xx"); //Replace xx with Seconds example 10,20 etc
        }
 
//RESTART
        protected void btnRestart_Click(object sender, EventArgs e)
        {
            Process.Start("shutdown.exe", "-r"); // By Default the Restart will take place after 30 Seconds 
 
            //if you want to change the Delay try this one
            Process.Start("shutdown.exe","-r -t 10"); //Replace xx with Seconds example 10,20 etc
        }
 
// LOG OFF
        protected void btnLogOff_Click(object sender, EventArgs e)
        {
            Process.Start("shutdown.exe", "-l"); //This Code Will Directly Log Off the System Without warnings
        }
//csharp/7536