When ZipItemLocalHeader.CompressionMethod is set to CompressionMethod.Stored or ZipItemLocalHeader.CompressionLevel is set to CompressionLevel.None, ZipWritersilently uses the CompressionMethod.Deflated / CompressionLevel.None combination. This makes use of the Deflate data format without compressing data. That format allows unzip operations like the ZipReader class to identify when an item's data ends. This would not be possible if raw uncompressed data were written in the archive.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2