By default, C1ZipFile opens and closes the zip file automatically whenever entries are added or removed.
This can cause delays in systems that have certain types of anti-virus software installed, or in situations where you want to add a large number of relatively small entries. In these cases, use the OpenBatch and CloseBatch methods to keep the zip file open until the entire operation is concluded.
Use a finally clause to ensure that the CloseBatch method is called even if an exception occurs.
C1ZipFile zip = new C1ZipFile(); zip.Open(myzipfile); try { zip.OpenBatch(); foreach (string fileName in Directory.GetFiles(path, "*.*")) zip.Entries.Add(fileName); } finally { zip.CloseBatch(); }
