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();
             }
             catch { }
         }
         public float Collect()
         {
             try
             {
                 return counter.NextValue();
             }
             catch (Exception ex)
             {
                 return -;
             }
         }
     }

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