public void Unsubscribe()
{
IDeviceEventCallback callback =
OperationContext.Current.GetCallbackChannel <IDeviceEventCallback>();
DeviceUpdated -= callback.OnDeviceUpdated;
}
public void Subscribe()
{
IDeviceEventCallback callback =
OperationContext.Current.GetCallbackChannel <IDeviceEventCallback>();
DeviceUpdated += callback.OnDeviceUpdated;
ICommunicationObject obj = (ICommunicationObject)callback;
obj.Closed += new EventHandler(EventService_Closed);
obj.Closing += new EventHandler(EventService_Closing);
}
