public static byte[] ExtractFile(this ZipStorer me, string file) { var zfe = me.ReadCentralDir().Where(x => x.FilenameInZip == file).FirstOrDefault(); var data = new byte[zfe.FileSize]; var stream = new MemoryStream(data); // Extract file using a stream. me.ExtractFile(zfe, stream); return(data); }
/// <summary> /// Removes one of many files in storage. It creates a new Zip file. /// </summary> /// <param name="_zip">Reference to the current Zip object</param> /// <param name="_zfes">List of Entries to remove from storage</param> /// <returns>True if success, false if not</returns> /// <remarks>This method only works for storage of type FileStream</remarks> public static bool RemoveEntries(ref ZipStorer _zip, List <ZipFileEntry> _zfes) { if (!(_zip.ZipFileStream is FileStream)) { throw new InvalidOperationException("RemoveEntries is allowed just over streams of type FileStream"); } //Get full list of entries List <ZipFileEntry> fullList = _zip.ReadCentralDir(); //In order to delete we need to create a copy of the zip file excluding the selected items string tempZipName = Path.GetTempFileName(); string tempEntryName = Path.GetTempFileName(); try { ZipStorer tempZip = ZipStorer.Create(tempZipName, string.Empty); foreach (ZipFileEntry zfe in fullList) { if (!_zfes.Contains(zfe)) { if (_zip.ExtractFile(zfe, tempEntryName)) { tempZip.AddFile(zfe.Method, tempEntryName, zfe.FilenameInZip, zfe.Comment); } } } _zip.Close(); tempZip.Close(); File.Delete(_zip.FileName); File.Move(tempZipName, _zip.FileName); _zip = ZipStorer.Open(_zip.FileName, _zip.Access); } catch { return(false); } finally { if (File.Exists(tempZipName)) { File.Delete(tempZipName); } if (File.Exists(tempEntryName)) { File.Delete(tempEntryName); } } return(true); }