public class Program
    {
        /// <summary>
        /// Book类

        /// </summary>
        [DataContract]
        [Serializable]
        public class Book
        {
            [DataMember]
            public int Id { get; set; }

            [DataMember]
            public string Name { get; set; }

            [DataMember]
            public float Price { get; set; }
        }

        static void Main(string[] args)
        {
            #region 将二进制文件反序列化为对象
            Book book = new Book() { Id = 101, Name = "C#程序设计", Price = 79.5f };

            //序列化文件
            BinaryFormatter formatter = new BinaryFormatter();
            using (FileStream stream = new FileStream(@"E:\book.txt", FileMode.OpenOrCreate))
            {
                Book outBook = formatter.Deserialize(stream) as Book;
                Console.WriteLine($"{outBook.Id} {outBook.Name} {outBook.Price}");
            }
            Console.Read();
            #endregion
        }
    }

    public class Program
    {
        /// <summary>
        /// Book类

        /// </summary>
        [DataContract]
        [Serializable]
        public class Book
        {
            [DataMember]
            public int Id { get; set; }

            [DataMember]
            public string Name { get; set; }

            [DataMember]
            public float Price { get; set; }
        }

        /// <summary>
        /// 序列化反序列化帮助类
        /// </summary>
        public class SerializerHelper
        {
            #region 二进制文件序列化反序列化
            /// <summary>
            /// 将对象序列化为字符串
            /// </summary>
            /// <typeparam name="T">类型</typeparam>
            /// <param name="t">实例</param>
            /// <returns>字符串</returns>
            public static string ObjectToString<T>(T t)
            {
                BinaryFormatter formatter = new BinaryFormatter();
                using (MemoryStream stream = new MemoryStream())
                {
                    formatter.Serialize(stream, t);
                    string result = Encoding.UTF8.GetString(stream.ToArray());
                    return result;
                }
            }

            /// <summary>
            /// 将对象序列化为二进制文件
            /// </summary>
            /// <typeparam name="T">类型</typeparam>
            /// <param name="t">实例</param>
            /// <param name="path">存放路径</param>
            public static void ObjectToBinaryFile<T>(T t, string path)
            {
                BinaryFormatter formatter = new BinaryFormatter();
                using (FileStream stream = new FileStream(path, FileMode.OpenOrCreate))
                {
                    formatter.Serialize(stream, t);
                    stream.Flush();
                }
            }

            /// <summary>
            /// 将字符串反序列为对象
            /// </summary>
            /// <typeparam name="T">类型</typeparam>
            /// <param name="s">字符串</param>
            /// <returns>对象</returns>
            public static T StringToObject<T>(string s) where T : class
            {
                byte[] buffer = Encoding.UTF8.GetBytes(s);
                BinaryFormatter formatter = new BinaryFormatter();
                using (MemoryStream stream = new MemoryStream(buffer))
                {
                    T result = formatter.Deserialize(stream) as T;
                    return result;
                }
            }

            /// <summary>
            /// 将二进制文件反序列化为对象

            /// </summary>
            /// <typeparam name="T">类型</typeparam>
            /// <param name="path">路径</param>
            /// <returns>对象</returns>
            public static T BinaryFileToObject<T>(string path) where T : class
            {
                using (FileStream stream = new FileStream(path, FileMode.Open))
                {
                    BinaryFormatter formatter = new BinaryFormatter();
                    T result = formatter.Deserialize(stream) as T;
                    return result;
                }
            }
            #endregion
        }

        static void Main(string[] args)
        {
            #region 二进制文件序列化反序列化泛型方法
            Book book = new Book() { Id = 101, Name = "C#程序设计", Price = 79.5f };
            //对象序列化为二进制文件
            SerializerHelper.ObjectToBinaryFile(book, @"E:\book.txt");

            //二进制文件反序列化为对象
            Book outBook = SerializerHelper.BinaryFileToObject<Book>(@"E:\book.txt") as Book;
            Console.WriteLine($"{outBook.Id} {outBook.Name} {outBook.Price}");

            Console.Read();
            #endregion
        }
    }