using the System.Diagnostics;


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"); 


//aşağıdaki metodları ise ihtiyacın olduğu yerde kullanabilirsin

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

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

public string getAvailableRAM(){ 
            ramCounter.NextValue()+"Mb"; 
}