/// <summary> /// 构造一个WebResourceManager,如果pipeline = null,抛出ArgumentNullException /// </summary> /// <param name="pipeline">流水线,不能是null</param> /// <param name="handler">处理搜索结果并显示的模块,不能是null</param> public WebResourceManager(Pipeline pipeline, IQueryResultHandler handler) { if (pipeline == null) { throw new ArgumentNullException("pipeline"); } if (handler == null) { throw new ArgumentNullException("handler"); } _pipeline = pipeline; _handler = handler; }