c# - 使用 zkemkeeper 从 zkteco 设备获取实时事件的指纹字节

Question

嗨，我正在使用 zkemkeeper sdk 开发一个用 c# 开发的应用程序，机器是 Zkteco TFT

一切正常，所有事件都正常，但是当有人刷他的手指时我需要绕过设备验证我想获取手指模板并想从数据库 SQL 进行验证

zkemkeeper.CZKEM objzkem_OnFinger = new zkemkeeper.CZKEM();

bool isconnected = objzkem_OnFinger.Connect_Net("192.168.10.6", Convert.ToInt32("4370"));

if (objzkem_OnFinger.RegEvent(1, 65535))
{
 objzkem_OnFinger.OnFinger += new zkemkeeper._IZKEMEvents_OnFingerEventHandler(axCZKEM1_OnFinger);                
}


and want to get finger when some one swipe his finger on scanner


private void axCZKEM1_OnFinger()
      {
          // label1.Text = "OK";
          byte[] TmpData = new byte[20000];
          int with = 500;
          int lenth = 800;
          bool fulimage = false;
          string path = @"F:\3.png";
          byte a = 1 ;
        bool result2 =   objzkem_OnFinger.EnableDevice(1, true);
          bool result = objzkem_OnFinger.CaptureImage(fulimage, ref with, ref lenth, ref a, path);

      }

but capture image always return false