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.NET Framework Class Library
System.IO.Compression Namespace

The System.IO.Compression namespace contains classes that provide basic compression and decompression services for streams.

Classes
 ClassDescription
Public classDeflateStreamProvides methods and properties for compressing and decompressing streams using the Deflate algorithm.
Public classGZipStreamProvides methods and properties used to compress and decompress streams.
Enumerations
 EnumerationDescription
Public enumerationCompressionMode Specifies whether to compress or decompress the underlying stream.