ManagementEventWatcher如何判断连接的是手机
WINFORM监听USB插入拔出代码如下附加代码，插入拔出USB设备都能监听到，现在我想监听手机插入拔出
， getEventQuery.Condition = @"TargetInstance ISA 'Win32_DiskDrive' ";  这个值应该修改成什么呢

   public void ControlUSBConnectionStatu()

        {

            ManagementEventWatcher getEventWatcher = null;

            WqlEventQuery getEventQuery = null;

            ManagementOperationObserver getObserver = new ManagementOperationObserver();  //Bind to Loacl Machine and Watch the PortConnection   

            ManagementScope getScope = new ManagementScope("root\\CIMV2");

            getScope.Options.EnablePrivileges = true;//set requeired 

            try

            {

                getEventQuery = new WqlEventQuery();

                getEventQuery.EventClassName = "__InstanceOperationEvent";

                getEventQuery.WithinInterval = new TimeSpan(0, 0, 0, 1);

                getEventQuery.Condition = @"TargetInstance ISA 'Win32_DiskDrive' ";

                //[Disk must have DiskDrive fuck ]   

                //Event Watcher [Test Event and semd informatio to this message and create new informtion .]  

                getEventWatcher = new ManagementEventWatcher(getEventQuery);

                getEventWatcher.EventArrived += new EventArrivedEventHandler(getEventWatcher_EventArrived);

                getEventWatcher.Start();//Start Watch Event   

            }

            catch (Exception se)

            {

            }

            finally

            {

                // getEventWatcher.Stop();  

            }

        }



     &nb