通过WMI获取机器信息

PerformanceCounter的介绍就不多说了，MSDN上介绍的很详细： https://msdn.microsoft.com/zh-cn/library/system.diagnostics.performancecounter(v=vs.110).aspx

//对PerformanceCounter进行封装
 public class PerformanceCounterCollect
    {
        private PerformanceCounter counter = null;
        public PerformanceCounterCollect(string categoryName, string counterName, string instanceName)
        {
            counter = new PerformanceCounter(categoryName, counterName, instanceName, ".");
            try
            {
                Collect();//开启采集
                System.Threading.Thread.Sleep(100);
            }
            catch { }
        }
        public float Collect()
        {
            try
            {
                return counter.NextValue();
            }
            catch (Exception ex)
            {
                return -1;
            }
        }
    }

收集CpuUtilization：new PerformanceCounterCollect("Processor", "% Processor Time", "_Total")

收集DiskReadSpeed： new PerformanceCounterCollect("PhysicalDisk", "Disk Read Bytes/sec", "_Total")

收集DiskWriteSpeed：new PerformanceCounterCollect("PhysicalDisk", "Disk Write Bytes/sec", "_Total")

收集MemoryAvailable：new PerformanceCounterCollect("Memory", "Available MBytes", "")

收集NetworkSendSpeed这个有一些繁琐，因为机器机器多网卡是很普遍的，要获取Enable的网卡，代码如下：

 var ethernetInstance = GetEthernetInstance();

  public static string GetEthernetInstance()
        {
            var result = new PerformanceCounterCategory("Network Interface");
            var instanceNames = result.GetInstanceNames();
            var ethernetDescriptions = GetEthernetDescriptions();
            foreach (var instance in instanceNames)
            {
                if (ethernetDescriptions.Contains(instance))
                {
                    return instance;
                }
            }
            return "";
            //throw new Exception("Not found enable ethernet instance.");
        }

 public static List<string> GetEthernetDescriptions()
        {
            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection moc = mc.GetInstances();
            List<string> descriptions = new List<string>();
            foreach (ManagementObject mo in moc)
            {
                if ((bool)mo["IPEnabled"])
                {
                    descriptions.Add(DesConvertInstance(mo["Description"].ToString()));
                }
            }
            return descriptions;
        }
static string DesConvertInstance(string description)
        {
            foreach (var ch in changeChars)
            {
                description = description.Replace(ch.Key, ch.Value);
            }
            return description;
        }
static Dictionary<string, string> changeChars = new Dictionary<string, string>()
        {
            {"(", "[" },
            {")", "]" },
            {"#", "_" },
        };

收集NetworkSendSpeed：new PerformanceCounterCollect("Network Interface", "Bytes Sent/sec", ethernetInstance)

收集NetworkReceivedSpeed： new PerformanceCounterCollect("Network Interface", "Bytes Received/sec", ethernetInstance)

WMI还有很多，大家有兴趣可以查看以下网址：

https://msdn.microsoft.com/en-us/library/dn792179(v=vs.85).aspx