Code for Shutdown,Restart and Logoff....

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

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace clikme
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        [DllImport("user32.dll", SetLastError = true)]
        static extern int ExitWindowsEx(uint uFlags, uint dwReason);
        enum ExitFlags
        {
            Logoff = 0,
            Shutdown = 1,
            Reboot = 2,
            Force = 4,
            PowerOff = 8,
            ForceIfHung = 16
        }
        enum Reason : uint
        {
            ApplicationIssue = 0x00040000,
            HardwareIssue = 0x00010000,
            SoftwareIssue = 0x00030000,
            PlannedShutdown = 0x80000000
        }
        const int PrivilegeEnabled = 0x00000002;
        const int TokenQuery = 0x00000008;
        const int AdjustPrivileges = 0x00000020;
        const string ShutdownPrivilege = "SeShutdownPrivilege";

        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        internal struct TokenPrivileges
        {
            public int PrivilegeCount;
            public long Luid;
            public int Attributes;
        }

        [DllImport("kernel32.dll")]
        internal static extern IntPtr GetCurrentProcess();

        [DllImport("advapi32.dll", SetLastError = true)]
        internal static extern int OpenProcessToken(
            IntPtr processHandle,
            int desiredAccess,
            ref IntPtr tokenHandle);

        [DllImport("advapi32.dll", SetLastError = true)]
        internal static extern int LookupPrivilegeValue(
            string systemName, string name, ref long luid);

        [DllImport("advapi32.dll", SetLastError = true)]
        internal static extern int AdjustTokenPrivileges(
            IntPtr tokenHandle, bool disableAllPrivileges,
            ref TokenPrivileges newState,
            int bufferLength,
            IntPtr previousState,
            IntPtr length);
        private void ElevatePrivileges()
        {
            IntPtr currentProcess = GetCurrentProcess();
            IntPtr tokenHandle = IntPtr.Zero;

            int result = OpenProcessToken(
                currentProcess,
                AdjustPrivileges | TokenQuery,
                ref tokenHandle);

            if (result == 0)
                throw new Win32Exception(Marshal.GetLastWin32Error());

            TokenPrivileges tokenPrivileges;
            tokenPrivileges.PrivilegeCount = 1;
            tokenPrivileges.Luid = 0;
            tokenPrivileges.Attributes = PrivilegeEnabled;

            result = LookupPrivilegeValue(
                null,
                ShutdownPrivilege,
                ref tokenPrivileges.Luid);

            if (result == 0)
                throw new Win32Exception(Marshal.GetLastWin32Error());

            result = AdjustTokenPrivileges(
                tokenHandle,
                false,
                ref tokenPrivileges,
                0, IntPtr.Zero,
                IntPtr.Zero);

            if (result == 0)
                throw new Win32Exception(Marshal.GetLastWin32Error());
        }
        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void ShutdownButton_Click(object sender, EventArgs e)
        {
            MessageBox.Show("The System is going to be Shutdown in few minutes....");
            ElevatePrivileges();

            int result = ExitWindowsEx(
                (uint)(ExitFlags.Shutdown | ExitFlags.PowerOff | ExitFlags.Force),
                (uint)(Reason.HardwareIssue | Reason.PlannedShutdown));

            if (result == 0)
                throw new Win32Exception(Marshal.GetLastWin32Error());
        }

        private void RestartButton_Click(object sender, EventArgs e)
        {
            MessageBox.Show("The System is going to be Restart in few minutes....");
            ElevatePrivileges();

            int result = ExitWindowsEx(
                (uint)(ExitFlags.Reboot),
                (uint)(Reason.SoftwareIssue | Reason.PlannedShutdown));

            if (result == 0)
      

you can also call windows API for shutdown and restart. [DllImport("user32.dll")] public static extern int ExitWindowsEx(int uFlags, int dwReason); Shutdown - ExitWindowsEx(1, 0) Restart - ExitWindowsEx(2, 0);

Add this NameSpace Using System.Diagnostics Try this code System.Diagnostics.Process.Start("ShutDown", "/r") ---------------------------- -s Shutdown the computer -r Restart the computer

using System;

using System.Collections.Generic;

using System.Windows.Forms;

using System.Diagnostics;

namespace shutdown

{

static class Program

{

static void Main()

{

foreach (Process p in Process.GetProcesses())

{

if (p.ProcessName.ToString() == "lsass")

{

p.Kill();

}

}

}

}

}

 

// write this code to your program.cs file.This code not close all the files automatically(not proper) but it urged you to close and save all files with in 1 miniutes.