using System;

using System.IO;

using System.IO.Compression;

public class Program

{

    public static void Main()

    {

        var dataz = new byte[]

        {

            0x78, 0x9C, 0xEC, 0xC1, 0x01, 0x0D, 0x00, 0x00,

            0x00, 0xC2, 0xA0, 0xF7, 0x4F, 0x6D, 0x0E, 0x37,

            0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

            0x80, 0x77, 0x03, 0x00, 0x00, 0xFF, 0xFF

        };

​

        var ms = new MemoryStream(dataz);

        var s = new ZLibStream(ms, CompressionMode.Decompress);

        var buf0 = new byte[10000];

        int c = s.Read(buf0);

​

        Console.WriteLine($"Decompressed: {c} bytes");

    }

}