shutdown and reset system

Question

hi 

i'm using this code :

 

 

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

using System.Diagnostics;

namespace Shutdown

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

}

private void button1_Click(object sender, EventArgs e)

{

Process.Start("Shutdown", "/s");

}

private void button2_Click(object sender, EventArgs e)

{

System.Diagnostics.Process.Start("shutdown", "/a");

}

}

}

------------------------------

but not happend ,what's problem?

thanx.