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Archive for October, 2009

How to Get CPU and Memory usage C#.Net

Posted by vivekcek on October 22, 2009

Ya after some long time i got chance to write an article
about,How to get CPU and Memory usage via our C#.NET.After some bit of research i found two methods are avialble,one by using WMI and System.Management class,till now i have n’t succeeded in implement the above scheme.Another simple methos avilable is using the PerformanceCounter class avilable in System.Diagnostic name space.You can find a lot of forums discussing about it also you can see that these codes show a 0% CPU use.So your are confused dont worry “Main hoon na”.

How to find the CPU usage?

1.Create a windows application in VS2005.
2.Add a timer to the Form set its interwell as 200,also set the enable property of timer true.
3.Declare an object of the performance counter class as
private PerformanceCounter cpuCounter; .
4.Create a method InitialiseCPUCounter() and initialize cpuCounter object as shown

private void InitialiseCPUCounter()
{
cpuCounter = new PerformanceCounter(
"Processor",
"% Processor Time",
"_Total",
true
);
}


5.On the tick event of the timer write the following code

private void updateTimer_Tick(object sender, EventArgs e)
{
this.textBox1.Text = "CPU Usage: " +
Convert.ToInt32(cpuCounter.NextValue()).ToString() +
"%";
}

6.Dont forget to call the InitialiseCPUCounter() method from Forms constructor and also start the timer at there.

CPU usage

Full code is given below

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
namespace WindowsApplication5
{
    public partial class Form1 : Form
    {
        
        private PerformanceCounter cpuCounter;
        private PerformanceCounter ramCounter;
        public Form1()
        {
            InitializeComponent();
            InitialiseCPUCounter();
            InitializeRAMCounter();
            updateTimer.Start();
        }

        private void updateTimer_Tick(object sender, EventArgs e)
        {
            this.textBox1.Text = "CPU Usage: " +
            Convert.ToInt32(cpuCounter.NextValue()).ToString() +
            "%";

            this.textBox2.Text = Convert.ToInt32(ramCounter.NextValue()).ToString()+"Mb";
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void InitialiseCPUCounter()
        {
            cpuCounter = new PerformanceCounter(
            "Processor",
            "% Processor Time",
            "_Total",
            true
            );
        }

        private void InitializeRAMCounter()
        {
            ramCounter = new PerformanceCounter("Memory", "Available MBytes", true);
        
        }
    }
}
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