List<Product> productList = new List<Product> { new Product(1, "orange", 1.0, "sales"), 
                new Product(2, "Apple", 2.0, "cheap") };
            foreach(Product product in productList)
            {
                Console.WriteLine(product);
            }
            Console.WriteLine("Please select your file");
            FileStream fs = new FileStream("Product.ini", FileMode.Create, FileAccess.ReadWrite);
            GZipStream gzCompressed = new GZipStream(fs, CompressionMode.Compress);
            try
            {
                IFormatter serialize = new BinaryFormatter();
                serialize.Serialize(gzCompressed, productList);
                gzCompressed.Close();
                FileStream fsRead = new FileStream("Product.ini", FileMode.Open, FileAccess.Read);
                GZipStream gzDecompressed = new GZipStream(fsRead, CompressionMode.Decompress);
                List<Product> deProductList = serialize.Deserialize(gzDecompressed) as List<Product>;
                gzDecompressed.Close();
                foreach (Product product in deProductList)
                {
                    Console.WriteLine(product);
                }
            }
            catch (SerializationException se)
            {
                Console.WriteLine(se.Message);
            }
            catch(IOException io) 
            {
                Console.WriteLine(io.ToString());
            }