序列化和反序列化

serialize（序列化）和deserialize（反序列化）

常用的两种序列化方法二进制和xml

BinaryFormatter

代码示例

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TestSerializable
{
    [Serializable]
    public class Person
    {
        public string name;

        public int age;

        [NonSerialized]
        public string sex;

        public void SayHi()
        {
            Console.WriteLine("我叫{0}，今年{1}岁，我是{2}",this.name,this.age,this.sex);
        }
        
    }
}

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Threading.Tasks;

namespace TestSerializable
{
    class Program
    {
        static void Main(string[] args)
        {
            //序列化
            Person person = new Person();
            person.age = 18;
            person.name = "Jack";
            person.sex = "man";

            FileStream stream = new FileStream(@"c:	empPerson.txt", FileMode.Create);
            BinaryFormatter bform = new BinaryFormatter();
            bform.Serialize(stream, person);
            stream.Close();

            //反序列化
            FileStream destream = new FileStream(@"c:	empPerson.txt", FileMode.Open, FileAccess.Read);
            var p = (Person)bform.Deserialize(destream);
            destream.Close();
            p.SayHi();
            Console.ReadKey();            
        }
    }
}

二进制序列化需引用System.Runtime.Serialization.Formatters.Binary

类被标注[Serializable],无需序列化的成员可用[NonSerialized]

序列化步骤：

1 创建对象及字段赋值

2 创建读写流

3 创建二进制对象

4 调用Serialize方法序列化对象

5 关闭读写流

 

反序列化步骤:

1 创建读写流

2 创建二进制对象

3 调用Deserialize反序列化

4 调用对象的字段等

5 关闭读写流

 

输出结果

注意 调用[NonSerialized]标记的成员，为默认值，比如string类型默认为null

 

XML

代码示例

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TestSerializable
{
    public class Person
    {
        public string name;

        public int age;

        private string sex;

        public Person()
        {

        }
        public Person(string isex)
        {
            this.sex = isex;
        }
       public void SayHi()
        {
            Console.WriteLine("我叫{0}，今年{1}岁，我是{2}",this.name,this.age,this.sex);
        }
        
    }
}

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Serialization;

namespace TestSerializable
{
    class Program
    {
        static void Main(string[] args)
        {
            //序列化
            Person person = new Person("man");
            person.age = 18;
            person.name = "Jack";

            FileStream stream = new FileStream(@"c:	empPerson.xml", FileMode.Create);
            XmlSerializer xs = new XmlSerializer(typeof(Person));
            xs.Serialize(stream, person);
            stream.Close();

            //反序列化
            FileStream destream = new FileStream(@"c:	empPerson.xml", FileMode.Open, FileAccess.Read);
            var p = (Person)xs.Deserialize(destream);
            destream.Close();
            p.SayHi();
            Console.ReadKey();            
        }
    }
}

xml序列化需引用System.Xml.Serialization 无需标记，非public的成员无法序列化

 

输出结果

总结：

1 序列化和反序列化适用于保存对象的当前状态

2 序列化可用于分布式系统中传输数据