c# 序列压缩、反序列解压缩对象并保存文件

public object DeCompress(string fileName)
        {
            object obj = null;
            try
            {
                using (Stream source = File.OpenRead(fileName))
                {
                    using (Stream destination = new MemoryStream())
                    {
                        using (GZipStream input = new GZipStream(source, CompressionMode.Decompress, true))
                        {
                            byte[] bytes = new byte[4096];
                            int n;
                            while ((n = input.Read(bytes, 0, bytes.Length)) != 0)
                            {
                                destination.Write(bytes, 0, n);
                            }
                        }
                        destination.Flush();
                        destination.Position = 0;
                        BinaryFormatter b = new BinaryFormatter();
                        obj = (object)b.Deserialize(destination);
                    }
                }
            }
            catch
            { }
            return obj;
        }
        private void CreateCompressFile(object obj, string fileName)
        {
            try
            {
                BinaryFormatter formatter = new BinaryFormatter();
                using (Stream source = new MemoryStream())
                {
                    formatter.Serialize(source, obj);
                    source.Position = 0;
                    using (Stream destination = new FileStream(fileName, FileMode.Append, FileAccess.Write))
                    {
                        using (GZipStream output = new GZipStream(destination, CompressionMode.Compress))
                        {
                            byte[] bytes = new byte[4096];
                            int n;
                            while ((n = source.Read(bytes, 0, bytes.Length)) != 0)
                            {
                                output.Write(bytes, 0, n);
                            }
                        }
                    }
                }
            }
            catch
            { }
        }

测试：

public void test()
        {
            string fileName = AppDomain.CurrentDomain.BaseDirectory.Trim() + "test.dat";
            Dictionary<string, int> dic = new Dictionary<string, int>();
            dic.Add("a", 1);
            dic.Add("b", 2);
            dic.Add("c", 3);
            dic.Add("d", 4);
            dic.Add("e", 5);
            dic.Add("f", 6);
            CreateCompressFile(dic, fileName);
            dic = (Dictionary<string, int>)DeCompress(fileName);
            Console.WriteLine(dic.Count);
        }