System 2.0.0.0 4.0.0.0 System.Enum System.Flags To be added. Represents the file compression and decompression encoding format to be used to compress the data received in response to an . Field 2.0.0.0 4.0.0.0 System.Net.DecompressionMethods Use the deflate compression-decompression algorithm. Field 2.0.0.0 4.0.0.0 System.Net.DecompressionMethods Use the gZip compression-decompression algorithm. Field 2.0.0.0 4.0.0.0 System.Net.DecompressionMethods Do not use compression.