https://www.cnblogs.com/Chary/p/7771365.html

http://www.cnblogs.com/zl1991/p/4679461.html

要關注幾個類 PerformanceCounter 用來針對cpu  ；ComputerInfo 用來針對記憶體

using Microsoft.VisualBasic.Devices;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
 
using System.Threading.Tasks;

namespace CpuAndMemory
{
    class Program
    {
        //PerformanceCounter 效能計數器
        public static PerformanceCounter cpu;

        //來自程式集 Microsoft.VisualBasic.dll 手動引用
        public static ComputerInfo cInfo;
        static void Main(string[] args)
        {
            cpu 
 
= new PerformanceCounter("Processor", "% Processor Time", "_Total");

            //---------------記憶體相關---------------
            cInfo = new ComputerInfo();
            Console.WriteLine("當前計算機的總記憶體大小為"+cInfo.TotalPhysicalMemory/1024/1024+"G");
            Console.WriteLine("當前計算機的虛擬記憶體大小為："+cInfo.TotalVirtualMemory / 1024
 
 / 1024 + "G");
            Console.WriteLine("當前計算機的虛擬記憶體大小為：" + cInfo.TotalVirtualMemory);
            Console.WriteLine("當前計算機的可用實體記憶體大小為：" + cInfo.AvailablePhysicalMemory);
            Console.WriteLine("當前計算機的可用虛擬記憶體大小為：" + cInfo.AvailableVirtualMemory);
            //---------------記憶體相關---------------
            Console.ReadKey();
        }
    }
}