C serialization simple experiment

1. Summary

Sometimes , Some variables will be lost due to program interruption . Can serialization be used to solve this problem , So there was this experiment .

2. Code

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

namespace  serialize 
{
    [Serializable]
    class A {
        int a = 1;
        string b = "b";
        public int fun() {
            return a + 2;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(" serialize ");
            A a = new A();
            // Objects for serialization and deserialization 
            IFormatter serializer = new BinaryFormatter();

            // Start serializing 
            FileStream saveFile = new FileStream("Test.txt", FileMode.Create, FileAccess.Write);
            serializer.Serialize(saveFile, a);
            saveFile.Close();

            // Deserialization 
            FileStream loadFile = new FileStream("Test.txt", FileMode.Open, FileAccess.Read);
            A a2 = serializer.Deserialize(loadFile) as A;
            int b = a2.fun();
            Console.ReadKey();
        }
    }
}

3. experimental result