[DotLucene]优化索引库

             string  indexDirectory  =  Server.MapPath( " index " );            StandardAnalyzer analyzer  =   new  StandardAnalyzer();            Lucene.Net.Index.IndexWriter writer  =   new  Lucene.Net.Index.IndexWriter(indexDirectory, analyzer,  false );            writer.SetUseCompoundFile( true );            DateTime start  =  DateTime.Now;             try              ... {                writer.Optimize();            }              finally              ... {                writer.Close();            }             Response.Write( " 优化索引费时( "   +  (DateTime.Now  -  start)  +   " ) " );