Bluetooth LE event handler quit without exception windows phone 8.1

Question

I am doing a Bluetooth LE app on wp8.1 runtime app. I have registered a value change event to listen when new data are coming.

heartRateMeasurementCharacteristic.ValueChanged += heartRateMeasurement_DataChanged;

private void heartRateMeasurement_DataChanged(GattCharacteristic sender, GattValueChangedEventArgs args)
{
  //do things
}

after a while the event is not triggered anymore, and rpgram throw NO exception(I checked runtime, memory etc). How can I debug this? Is that possible the event thread is down leaves without any exception?

under condition that BLE device is keep sending signal.

Answer 1

这是旧文章，但答案是将heartRateMeasurementCharacteristic设置为全局变量。