public void Stop()
{
/*
* 取消 CrowdRealTimeEvent 事件
* stop
*/
if (m_vm != null)
{
WinFormAppUtil.AppContainer.Instance.EvtAggregator.GetEvent <CrowdRealTimeEvent>().Unsubscribe(OnSearchResultReturned);
m_vm.StopCrowdRealtime();
m_vm = null;
}
}