BinLib.Blib.Load C# (CSharp) Method

        public void Load(string fileName)
        {
            _files = new List<File>();
            FileStream f = System.IO.File.OpenRead(fileName);
            var gz = new GZipStream(f, CompressionMode.Decompress);

            int fileNum = GetInt(gz);
            for (int i = 0; i < fileNum; i++)
            {
                var fl = new File();
                int fnlen = GetInt(gz);
                var binName = new byte[fnlen];
                gz.Read(binName, 0, fnlen);
                fl.FileName = Encoding.Default.GetString(binName);
                int flen = GetInt(gz);
                var bin = new byte[flen];
                gz.Read(bin, 0, flen);
                fl.Content = bin;
                _files.Add(fl);
            }
            gz.Close();
            f.Close();
        }

        private static void Main(string[] args)
        {
            //string file = args.Length == 0 ? "test" : args[0];
            string file = args.Length == 0 ? "lut_00FE" : args[0];

            _mainNet = new Mnet();
            _mainNet.ReadMnetFile(file + @".MNET");

            var portsRep = new List<Cpoint>();
            List<Node> luts = _mainNet.GetLuts();
            var lutsMnet = new List<Mnet>();
            var bl = new Blib();
            bl.Load("MNETLib.BinLib");
            //"MNETLib.BinLib"

            foreach (Node node in luts)
            {
                var lnet = new Mnet();
                node.HaveCout = СheckCout(node, _mainNet.Wires);

                lnet.ReadMnetFileBl(@"lut_" + node.GetLutKey() + ".MNET", bl);
                if (!node.HaveCout)
                {
                    lutsMnet.Add(lnet);
                }
                else
                {
                    var lnetC = new Mnet();
                    lnetC.ReadMnetFileBl(@"lutc_" + node.GetLutKey().Substring(2, 2) + ".MNET", bl);
                    Mnet combined = MnetComb(lnet, lnetC);
                    lutsMnet.Add(combined);
                }
            }
            RenameLutNodes(lutsMnet);
            RemoveLutFromMainNet(_mainNet, luts);
            ReplacePortsByCpoints(portsRep, lutsMnet, luts);

            RpeplaceWireToCpoints(portsRep);
            CombineAllWiresAndNodes(lutsMnet);
            //remove unused Wire
            _mainNet.Wires.Remove(_mainNet.Wires.FirstOrDefault(t => t.DistPort == "dataa"));
            _mainNet.Wires.Remove(_mainNet.Wires.FirstOrDefault(t => t.DistPort == "datab"));
            _mainNet.Wires.Remove(_mainNet.Wires.FirstOrDefault(t => t.DistPort == "datac"));
            _mainNet.Wires.Remove(_mainNet.Wires.FirstOrDefault(t => t.DistPort == "datad"));
            string exportStr = _mainNet.GetSting();
            File.WriteAllText(file + @"_D.MNET", exportStr);
        }