C#实现文件二进制存储

private static BinaryFormatter Transfer = new BinaryFormatter(); 

        public int BinaryFileSav()
        {
            //-----二进制文件写入并存储

            saveFileDialog1.Filter = "数据文件(*.tifs)|*.tifs";
            saveFileDialog1.Title = "文件存储";
            saveFileDialog1.FileName = "新数据文件.tifs";
            saveFileDialog1.ShowDialog();

            Stream flstr = new FileStream(saveFileDialog1.FileName, FileMode.Create);
            BinaryWriter sw = new BinaryWriter(flstr, Encoding.Unicode);
            byte[] buffer = ChangeObjectToByte(obj);
            sw.Write(buffer);

            sw.Close();
            flstr.Close();

            return 0;
        }

        public int BinaryFileOpen()
        {
            //-----二进制文件读取
            openFileDialog1.Filter = "数据文件(*.tifs)|*.tifs";
            openFileDialog1.Title = "文件打开";
            openFileDialog1.FileName = "";
            openFileDialog1.ShowDialog();

            Stream flstr = new FileStream(openFileDialog1.FileName, FileMode.Open);
            BinaryReader sr = new BinaryReader(flstr, Encoding.Unicode);
            byte[] buffer = sr.ReadBytes((int)flstr.Length);
            FrameForm.Tifs.fileinfo = (FileInfo)ChangeByteToObject(buffer);

            sr.Close();
            flstr.Close();
           
            return 0;
        }


        #region ArrayList数组的二进制转化实现

        /// <summary> 
        /// 序列化，存储用
        /// </summary> 
        /// <param name="msg">要序列化的对象</param> 
        /// <returns>转化成的byte</returns> 
        private static byte[] ChangeObjectToByte(object obj)
        {
            try
            {
                MemoryStream ms = new MemoryStream();
                //----将对象序列化 
                Transfer.Serialize(ms, obj);
                byte[] buffer = ms.GetBuffer();
                return buffer;
            }
            catch (Exception err)
            {
                return null;
            }
        }

        /// <summary> 
        /// 反序列化，读取用
        /// </summary> 
        /// <param name="buffer">二进制流</param> 
        private static object ChangeByteToObject(byte[] buffer)
        {
            try
            {
                MemoryStream ms = new MemoryStream(buffer, 0, buffer.Length, true, true);
                //----将流反序列化为对象 
                object obj = Transfer.Deserialize(ms);
                return obj;
            }
            catch (Exception err)
            {
                return null;
            }
        }

        #endregion

obj代表任意数据类型。另外，最好在该类前加注[Serializable] //----必须令相应的类实现可序列化标记接口