原文:
使用.NET FrameWork获取CPU,内存使用率以及磁盘空间
在以前，我们想获取CPU，内存等信息就不得不借助win32 API来实现。但现在，.NET FrameWork已经把这些API封装到.NET类库中了，所以我们可以借助.NET类库很轻松的获取这些信息。首先，介绍几个要用到的类：
PerformanceCounter：表示windows NT性能计数器组件
ComputerInfo：提供用于获取与计算机内存，已加载程序集，名称和操作系统有关信息的属性
DriveInfo：该类位于System.IO命名空间下，提供对有关驱动器信息的访问
介绍完几个必要的类，就开始实践吧：
1.初始化几个变量：
this.cpu = new PerformanceCounter("Processor", "% Processor Time", "_Total"); this.cinf = new ComputerInfo();
2.获取占用CPU的百分比
public double GetCpuPercent() { var percentage = this.cpu.NextValue(); return Math.Round(percentage, 2, MidpointRounding.AwayFromZero); }
3.获取占用内存的百分比
public double GetMemoryPercent() { var usedMem = this.cinf.TotalPhysicalMemory - this.cinf .AvailablePhysicalMemory ;//总内存减去可用内存 return Math.Round( (double)(usedMem / Convert.ToDecimal(this.cinf.TotalPhysicalMemory) * 100), 2, MidpointRounding.AwayFromZero); }
4.获取磁盘剩余空间及总空间
/// <summary> /// 根据盘符获取磁盘信息 /// </summary> /// <param name="diskName"></param> /// <returns>一个自定义类对象</returns> public HardDiskInfo GetHardDiskInfoByName(string diskName) { DriveInfo drive = new DriveInfo(diskName); return new HardDiskInfo { FreeSpace = GetDriveData(drive.AvailableFreeSpace),TotalSpace =GetDriveData (drive.TotalSize ),Name =drive .Name }; } /// <summary> /// 获取所有驱动盘信息 /// </summary> /// <returns></returns> public IEnumerable<HardDiskInfo> GetAllHardDiskInfo() { List<HardDiskInfo> list = new List<HardDiskInfo>(); foreach (DriveInfo d in DriveInfo.GetDrives()) { if (d.IsReady) { list.Add(new HardDiskInfo { Name = d.Name, FreeSpace = this.GetDriveData(d.AvailableFreeSpace), TotalSpace = this.GetDriveData(d.TotalSize) }); } } return list; } private string GetDriveData(long data)//将磁盘大小的单位由byte转化为G { return (data / Convert.ToDouble(1024) / Convert.ToDouble(1024) / Convert.ToDouble(1024)).ToString("0.00"); } class HardDiskInfo//自定义类 { public string Name { get; set; } public string FreeSpace { get; set; } public string TotalSpace { get;set;} }
运行结果：
Demo下载：
