System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize C# (CSharp) Method

        internal object Deserialize(Stream serializationStream, bool check)
        {
            if (serializationStream == null)
            {
                throw new ArgumentNullException(nameof(serializationStream));
            }
            if (serializationStream.CanSeek && (serializationStream.Length == 0))
            {
                throw new SerializationException(SR.Serialization_Stream);
            }

            var formatterEnums = new InternalFE()
            {
                _typeFormat = _typeFormat,
                _serializerTypeEnum = InternalSerializerTypeE.Binary,
                _assemblyFormat = _assemblyFormat,
                _securityLevel = _securityLevel,
            };

            var reader = new ObjectReader(serializationStream, _surrogates, _context, formatterEnums, _binder)
            {
                _crossAppDomainArray = _crossAppDomainArray
            };
            var parser = new BinaryParser(serializationStream, reader);
            return reader.Deserialize(parser, check);
        }
        public void Serialize(Stream serializationStream, object graph) => 

        private void ReReadFiles()
        {
            FilesGrid.Items.Clear();
            try
            {
                Configuration config = (App.Current as App).config;
                using (TcpClient eClient = new TcpClient(config.IP.ToString(), config.Port))
                {
                    using (NetworkStream writerStream = eClient.GetStream())
                    {
                        MSG message = new MSG();
                        message.stat = STATUS.GET_FILES;
                        BinaryFormatter formatter = new BinaryFormatter();
                        formatter.Serialize(writerStream, message);
                        formatter.Serialize(writerStream, _eventId);
                        formatter.Serialize(writerStream, true);
                        _instrFiles = (Dictionary<string, string>)formatter.Deserialize(writerStream);
                        _studFiles = (Dictionary<string, string>)formatter.Deserialize(writerStream);
                        foreach (var file in _instrFiles)
                        {
                            FilesGrid.Items.Add(new FileRow(file.Key, "Викладач"));
                        }
                        foreach (var file in _studFiles)
                        {
                            FilesGrid.Items.Add(new FileRow(file.Key, "Студент"));
                        }
                    }
                }

            }
            catch (Exception)
            {
                MessageBox.Show("Помилка додавання файлу");
            }
        }