System.Object
   System.Exception
      System.SystemException
         System.IO.IOException
            Xceed.Compression.CompressionException
               Xceed.Compression.CompressionInternalException
            Xceed.Compression.EncryptionException
      Xceed.Compression.ZCryptException
   System.MarshalByRefObject
      System.IO.Stream
         Xceed.Compression.AesEncryptionStream
         Xceed.Compression.CompressedStream
         Xceed.Compression.ZCryptStream
   Xceed.Compression.CompressedStreamOptions
   Xceed.Compression.Compressor
      Xceed.Compression.Coder.CoderCompressor
         Xceed.Compression.ManagedDeflateCompressorUnsafe
         Xceed.Compression.ManagedLzmaCompressorUnsafe
      Xceed.Compression.ManagedPPMdCompressor
      Xceed.Compression.UncompressedCompressor
   Xceed.Compression.CompressorFactory
   Xceed.Compression.Decompressor
      Xceed.Compression.Coder.CoderDecompressor
         Xceed.Compression.ManagedDeflateDecompressorUnsafe
         Xceed.Compression.ManagedLzmaDecompressorUnsafe
   Xceed.Compression.DecompressorFactory
   Xceed.Compression.DeriveBytesRfc2898
   Xceed.Compression.Licenser
   Xceed.Compression.QuickCompression
   Xceed.Compression.Rfc2898DeriveBytesManager
   Xceed.Compression.Rfc2898DeriveBytesRecord

Reference

Xceed.Compression Assembly