zkemkeeper.CZKEMClass zkDevice = new zkemkeeper.CZKEMClass();
 
Thread th = new Thread((ThreadStart)delegate()
 {
            _isConnected = zkDevice.Connect_Net(_deviceip, _deviceport);  
 
            if (_isConnected == true)
            {
                //连接成功后才能注册
                //如果断开后事件也自然失效                   
                if (zkDevice.RegEvent(1, 65535))//Here you can register the realtime events that you want to be triggered(the parameters 65535 means registering all)
                {
 
　　　　　　　　  zkDevice.OnFinger += new zkemkeeper._IZKEMEvents_OnFingerEventHandler(zkDevice_OnFinger);
 
　　　　　　}
         Application.Run();  //新加代码，后是可以正常订阅事件
 });
 th.IsBackground = true;
 th.Start();