大佬教程收集整理的这篇文章主要介绍了C#获取CPU和内存使用率，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
方式1：
using System; using System.Runtime.Interopservices; namespace ConsoleApp1 { public class Class1 { static void Main(String[] args) { Console.WriteLine("总内存：" + FormatSize(Get@R_663_10586@lPhys())); Console.WriteLine("已使用：" + FormatSize(GetUsedPhys())); Console.WriteLine("可使用：" + FormatSize(GetAvailPhys())); Console.ReadKey(); } #region 获得内存信息API [DllImport("kernel32.dll")] [return: MarshalAs(UnmanagedType.bool)] public static extern bool GlobalMemoryStatusEx(ref MEMORY_INFO mi); //定义内存的信息结构 [StructLayout(LayoutKind.Sequential)] public struct MEMORY_INFO { public uint dwLength; //当前结构体大小 public uint dwMemoryLoad; //当前内存使用率 public ulong ull@R_663_10586@lPhys; //总计物理内存大小 public ulong ullAvailPhys; //可用物理内存大小 public ulong ull@R_663_10586@lPageFile; //总计交换文件大小 public ulong ullAvailPageFile; //总计交换文件大小 public ulong ull@R_663_10586@lVirtual; //总计虚拟内存大小 public ulong ullAvailVirtual; //可用虚拟内存大小 public ulong ullAvailExtendedVirtual; //保留 这个值始终为0 } #endregion #region 格式化容量大小 @H_450_193@/// @H_450_193@<sumMary> @H_450_193@/// 格式化容量大小 @H_450_193@/// @H_450_193@</sumMary> @H_450_193@/// @H_450_193@<param name="size">容量（B）@H_450_193@</param> @H_450_193@/// @H_450_193@<returns>已格式化的容量@H_450_193@</returns> private static String FormatSize(double sizE) { double d = (double)size; int i = 0; while ((d > 1024) && (i < 5)) { d /= 1024; i++; } String[] unit = { "B","KB","@H_505_51@mB","GB","TB" }; return (String.Format("{0} {1}",Math.round(d,2),unit[i])); } #endregion #region 获得当前内存使用情况 @H_450_193@/// @H_450_193@<sumMary> @H_450_193@/// 获得当前内存使用情况 @H_450_193@/// @H_450_193@</sumMary> @H_450_193@/// @H_450_193@<returns></returns> public static MEMORY_INFO GetMemoryStatus() { MEMORY_INFO mi = new MEMORY_INFO(); mi.dwLength = (uint)System.Runtime.Interopservices.Marshal.SizeOf(mi); GlobalMemoryStatusEx(ref mi); return mi; } #endregion #region 获得当前可用物理内存大小 @H_450_193@/// @H_450_193@<sumMary> @H_450_193@/// 获得当前可用物理内存大小 @H_450_193@/// @H_450_193@</sumMary> @H_450_193@/// @H_450_193@<returns>当前可用物理内存（B）@H_450_193@</returns> public static ulong GetAvailPhys() { MEMORY_INFO mi = GetMemoryStatus(); return mi.ullAvailPhys; } #endregion #region 获得当前已使用的内存大小 @H_450_193@/// @H_450_193@<sumMary> @H_450_193@/// 获得当前已使用的内存大小 @H_450_193@/// @H_450_193@</sumMary> @H_450_193@/// @H_450_193@<returns>已使用的内存大小（B）@H_450_193@</returns> public static ulong GetUsedPhys() { MEMORY_INFO mi = GetMemoryStatus(); return (mi.ull@R_663_10586@lPhys - mi.ullAvailPhys); } #endregion #region 获得当前总计物理内存大小 @H_450_193@/// @H_450_193@<sumMary> @H_450_193@/// 获得当前总计物理内存大小 @H_450_193@/// @H_450_193@</sumMary> @H_450_193@/// @H_450_193@<returns&gt;总计物理内存大小（B）&lt;/returns&gt; public static ulong Get@R_663_10586@lPhys() { MEMORY_INFO mi = GetMemoryStatus(); return mi.ull@R_663_10586@lPhys; } #endregion } }
方式2：
using System; using System.Management; namespace ConsoleApp1 { public class Class1 { static void Main(String[] args) { //需要添加 System.Management 的引用 //获取总物理内存大小 ManagementClass cimobject1 = new ManagementClass("Win32_PhysicalMemory"); ManagementObjectCollection moc1 = cimobject1.GeTinstances(); double available=0,capacity=0; foreach (ManagementObject mo1 in moc1) { capacity += ((Math.round(Int64.Parse(mo1.Properties["Capacity"].Value.ToString()) / 1024 / 1024 / 1024.0,1))); } moc1.Dispose(); cimobject1.Dispose(); //获取内存可用大小 ManagementClass cimobject2 = new ManagementClass("Win32_PerfFormattedData_PerfOS_Memory"); ManagementObjectCollection moc2 = cimobject2.GeTinstances(); foreach (ManagementObject mo2 in moc2) { available += ((Math.round(Int64.Parse(mo2.Properties["AvailableMBytes"].Value.ToString()) / 1024.0,1))); } moc2.Dispose(); cimobject2.Dispose(); Console.WriteLine("总内存=" + capacity.ToString() + "G"); Console.WriteLine("可使用=" + available.ToString() + "G"); Console.WriteLine("已使用=" + ((capacity - availablE)).ToString() + "G," + (Math.round((capacity - availablE) / capacity * 100,0)).ToString() + "%"); Console.ReadKey(); } } }
using System; using System.Diagnostics; namespace ConsoleApp1 { public class Class1 { static void Main(String[] args) { PerfoRMANceCounter cpuCounter; PerfoRMANceCounter ramCounter; cpuCounter = new PerfoRMANceCounter(); cpuCounter.CategoryName = "Processor"; cpuCounter.CounterName = "% Processor Time"; cpuCounter.Instancename = "_@R_663_10586@l"; cpuCounter = new PerfoRMANceCounter("Processor","% Processor Time","_@R_663_10586@l"); ramCounter = new PerfoRMANceCounter("@H_505_51@memory","Available MBytes"); Console.WriteLine("电脑cpu使用率：" + cpuCounter.NextValue() + "%"); Console.WriteLine("电脑可使用内存：" + ramCounter.NextValue() + "@H_505_51@mB"); Console.WriteLine(); while (true) { System.Threading.Thread.Sleep(1000); Console.WriteLine("电脑cpu使用率：" + cpuCounter.NextValue() + " %"); Console.WriteLine("电脑可使用内存：" + ramCounter.NextValue() + "@H_505_51@mB"); Console.WriteLine(); if ((int)cpuCounter.NextValue() > 80) { System.Threading.Thread.Sleep(1000 * 60); } } } } }
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