private static void ZipPatchDirectory(string directory, string patchArchive) { try { ConsoleSpinner cs = new ConsoleSpinner(); // Depending on the directory this could be very large and would require more attention // in a commercial package. string[] filenames = Directory.GetFiles(directory); // 'using' statements guarantee the stream is closed properly which is a big source // of problems otherwise. Its exception safe as well which is great. using (ZipOutputStream s = new ZipOutputStream(File.Create(patchArchive))) { s.SetLevel(9); // 0 - store only to 9 - means best compression byte[] buffer = new byte[8192]; foreach (string file in filenames) { // Using GetFileName makes the result compatible with XP // as the resulting path is not absolute. ZipEntry entry = new ZipEntry(Path.GetFileName(file)); // Setup the entry data as required. // Crc and size are handled by the library for seakable streams // so no need to do them here. // Could also use the last write time or similar for the file. entry.DateTime = DateTime.Now; s.PutNextEntry(entry); using (FileStream fs = File.OpenRead(file)) { // Using a fixed size buffer here makes no noticeable difference for output // but keeps a lid on memory usage. int sourceBytes; do { cs.Turn(); sourceBytes = fs.Read(buffer, 0, buffer.Length); s.Write(buffer, 0, sourceBytes); } while (sourceBytes > 0); } } // Finish/Close arent needed strictly as the using statement does this automatically // Finish is important to ensure trailing information for a Zip file is appended. Without this // the created file would be invalid. s.Finish(); // Close is important to wrap things up and unlock the file. s.Close(); } Console.WriteLine("Patch file [" + patchArchive + "] created."); } catch (Exception ex) { Console.WriteLine("Exception during packaging processing {0}", ex); } }