【Visual Studio Visual Csharp】OS function logoff,restart,shutdoen the system

 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.Runtime.InteropServices; // make sure that using System.Runtime.InteropServices; is included using System.Diagnostics; // make sure that using System.Diagnostics; is included namespace osfunctionC { public partial class Form1 : Form { public Form1() { InitializeComponent(); } [DllImport("user32.dll")] public static extern int ExitWindowsEx(int operationFlag, int operationReason); private void button1_Click(object sender, EventArgs e) { // Log off the System ExitWindowsEx(0, 0); } private void button2_Click(object sender, EventArgs e) { // Restart the System ExitWindowsEx(2, 0); } private void button3_Click(object sender, EventArgs e) { // Shut Down the System ExitWindowsEx(1, 0); } } }