當麻許的超技八

Stopwatch sw = new Stopwatch();

// 啟動計時器

sw.Start();

string indexPath = AppDomain.CurrentDomain.BaseDirectory.ToString() + "\\Index1\\";

DirectoryInfo dirInfo = new DirectoryInfo(indexPath);

FSDirectory dir = FSDirectory.Open(dirInfo);

// 讀取 index file

IndexReader reader = IndexReader.Open(dir, false);

// 透過 Term 敘述當 Id 是 9 的資料透過 IndexReader 去刪除

reader.DeleteDocuments(new Term("Id", "9"));

reader.Close();

sw.Stop();

Response.Write("刪除指定索引花費時間: " + sw.Elapsed + "");