如何用C＃获取当前CPU、内存的利用率？

Question

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Answer 1

using System;
using System.Diagnostics;
using System.Threading;
public class CpuLoadInfo 
{ // auxiliary print methods 
private static void Say ( string txt ) 
{
Console.WriteLine(txt);
} // auxiliary print methods 
private static void Say() 
{
Say("");
} // The main method. Command line arguments are ignored.
[STAThread]
public static void Main() 
{
Say("$Id: CpuLoadInfo.cs,v 1.2 2002/08/17 17:45:48 rz65 Exp $");
Say(); Say("Attempt to create a PerformanceCounter instance:");
Say("Category name = " + CategoryName);
Say("Counter name  = " + CounterName);
Say("Instance name = " + InstanceName);
PerformanceCounter pc
= new PerformanceCounter(CategoryName,CounterName,InstanceName);
Say("Performance counter was created.");
Say("Property CounterType: " + pc.CounterType);
Say(); Say("Property CounterHelp: " + pc.CounterHelp);
Say();
Say("Entering measurement loop."); while (true) 
{
Thread.Sleep(1000); // wait for 1 second
float cpuLoad = pc.NextValue();
Say("CPU load = " + cpuLoad + " %.");
}
}     // constants used to select the performance counter.
private const string CategoryName = "Processor";
private const string CounterName  = "% Processor Time";
private const string InstanceName = "_Total";
}

Answer 2

查看主机的内存使用情 
http://www.csdn.net/Develop/Read_Article.asp?Id=3664

Answer 3

http://www.codeproject.com/csharp/PerfGrid.asp