private void RegisterEvents()
{
//加入案件节点;
CommonEventHelper.GetEvent <CaseLoadingEvent>().Subscribe(OnCaseLoaded);
//订阅案件关闭事件;
CommonEventHelper.Subscribe <CaseUnloadedEvent, ICase>(OnCaseUnloaded);
//当案件文件被加载时,向树形节点中加入案件文件;
CommonEventHelper.GetEvent <CaseEvidenceLoadedEvent>().Subscribe(OnEvidenceLoaded);
CommonEventHelper.GetEvent <CaseEvidenceRemovedEvent>().Subscribe(OnCaseEvidenceRemoved);
}