These objects compress or decompress the standard Xceed custom compression format.
This is the same format used by the Xceed Zip Compression Library v5.x XceedCompression object. This data format uses an Adler-32 checksum and can use a selectable compression algorithm (or no compression at all, just a checksum) so when compressing data, you will need to ensure the CompressionMethod property is set to the desired algorithm, which by default is Deflate .
The XceedStandardCompressionFormat object is compatible with the XceedCompressedStream class of Xceed Streaming Compression for .NET while the XceedStandardCompressionFormatEx object is compatible with the XceedCompression object of the ActiveX Xceed Zip Compression Library and the XceedCompressedStreamEx class of Xceed Streaming Compression for .NET.
DXceedStandardCompressionFormat (Default dual interface)
IXceedStandardCompressionFormat
Xceed.StandardCompressionFormat.1