How to get the available RAM and the cpu usage in percents?

These methods are very usefull in order to monitor the system and particulary the amount of the available RAM in MB (MegaBytes) and the cpu usage in percents.

/*
First you have to create the 2 performance counters
using the System.Diagnostics.PerformanceCounter class.
*/

protected PerformanceCounter cpuCounter;
protected PerformanceCounter ramCounter;

cpuCounter = new PerformanceCounter();

cpuCounter.CategoryName = "Processor";
cpuCounter.CounterName = "% Processor Time";
cpuCounter.InstanceName = "_Total";

ramCounter = new PerformanceCounter("Memory", "Available MBytes");

/*
Call this method every time you need to know
the current cpu usage.
*/

public string getCurrentCpuUsage(){
cpuCounter.NextValue()+"%";
}

/*
Call this method every time you need to get
the amount of the available RAM in Mb
*/
public string getAvailableRAM(){
ramCounter.NextValue()+"Mb";
}

---------------------------------------------C#获得CPU利用率--------------------------------------------------

using System;
namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            using (System.Diagnostics.PerformanceCounter p = new System.Diagnostics.PerformanceCounter("Processor", "% Processor Time", "_Total"))
            {
                while (true)
                {
                    System.Threading.Thread.Sleep(1000);
                    Console.WriteLine("{0}%", p.NextValue());
                }
            }
            Console.Read();

        }
    }
}