Hibernate_PC.cs

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

namespace SleepMode
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        [DllImport("Powrprof.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
        public static extern bool SetSuspendState(bool hiberate, bool forceCritical, bool disableWakeEvent);

        private void button1_Click(object sender, EventArgs e)
        {
            SetSuspendState(true, true, true);
        }
    }
}