Lucene.NET3.0 排序功能求帮助

[meiguiyu00]

Lucene.Net.Search.Sort sort = new Lucene.Net.Search.Sort();
            Lucene.Net.Search.SortField f1 = new SortField("type", SortField.INT, true);
            Lucene.Net.Search.SortField f2 = new SortField("longtime", SortField.LONG, true);
            string keywords = GetKeyWords(key, new PanGuTokenizer());
            sort.SetSort(new SortField[] { f1, f2 });
            string[] fields = { "content", "title" };
            QueryParser queryParser = new MultiFieldQueryParser(version, fields, analyzer);
            Query query = queryParser.Parse(keywords);
            BooleanQuery bq = new BooleanQuery();
            bq.Add(query, Occur.MUST);
            TopScoreDocCollector collector = TopScoreDocCollector.Create(50, true);
            searcher.Search(bq,collector);
            ScoreDoc[] docs = collector.TopDocs(0, collector.TotalHits).ScoreDocs;

我用的searcher.Search(bq,collector)如何用别的办法实现排序?
也试过searcher.Search(bq,null,50,sort)可以排序，但是查询结果不理想，不知道是什么原因。

[meiguiyu00]

自己顶下··