"Ionic. Zlib. ZlibException" type of exception in Ionic. Zlib. DLL, but not in the user code for processing
Bad state (unknown compression will method (0 x00))

Find a lot of, don't know where the problem in the

 output=new MemoryStream (); 
Ionic. Zlib. ZlibStream deflateStream=new Ionic. Zlib. ZlibStream (output, Ionic.Zlib.Com pressionMode. Decompress); 
DeflateStream. Write (reader. ReadBytes (nSize), 0, nSize); 
Bytes=output. The ToArray (); 
DeflateStream. Close (); 
The output. The Close ();