[C#] CPU 사용량 보기

using System;

using System.Windows.Forms;

using System.Diagnostics;

using System.Threading;

using System.IO;

using System.Drawing;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Linq;

using System.Text;

using System.Management;

 

namespace CPUUsage

{

    public partial class Form1 : Form

    {

        private Thread addDataRunner;

        public delegate void AddDataDelegate();

        public AddDataDelegate addDataDel;

 

        PerformanceCounter p;

        public Form1()

        {

            InitializeComponent();

        }

 

        private void btnShow_Click(object sender, EventArgs e)

        {

            p = new PerformanceCounter();

            p.CategoryName = "Processor"; 

            p.CounterName = "% Processor Time";

            p.InstanceName = "_Total";

 

            addDataRunner.Start();

        }

       

        private void Form1_Load(object sender, EventArgs e)

        {

            ThreadStart addDataThreadStart = new ThreadStart(AddDataThreadLoop);

            addDataRunner = new Thread(addDataThreadStart);

            addDataDel += new AddDataDelegate(AddData);

            progressBar1.Maximum = 100;

        }

 

        private void AddDataThreadLoop()

        {

            while (true)

            {

                progressBar1.Invoke(addDataDel);

                Thread.Sleep(1000);

            }

        }

 

        public void AddData()

        {

            float usage = p.NextValue();

            progressBar1.Value = ((int)usage);

            lbUsage.Text = "CPU사용 : " + ((int)usage).ToString() + "%";

           

        }

 

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)

        {

            addDataRunner.Abort();

        }

 

    }

}