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, , 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) * ),
,
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() / Convert.ToDouble() / Convert.ToDouble()).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：