Console Application : Serialize and deserialize (c#.net)

using System;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
//using System.Runtime.Serialization.Formatters.Binary;

public class Test
{
public static void Main()
{

//Creates a new TestSimpleObject object.
TestSimpleObject obj = new TestSimpleObject();

Console.WriteLine("Before serialization the object contains: ");
obj.Print();

//Opens a file and serializes the object into it in binary format.
Stream stream = File.Open("data.xml", FileMode.Create);
BinaryFormatter formatter = new BinaryFormatter();

//BinaryFormatter formatter = new BinaryFormatter();

formatter.Serialize(stream, obj);
stream.Close();

//Empties obj.
obj = null;

//Opens file "data.xml" and deserializes the object from it.
stream = File.Open("data.xml", FileMode.Open);
formatter = new BinaryFormatter();

//formatter = new BinaryFormatter();

obj = (TestSimpleObject)formatter.Deserialize(stream);
stream.Close();

Console.WriteLine("");
Console.WriteLine("After deserialization the object contains: ");
obj.Print();
Console.ReadLine();
}
}


// A test object that needs to be serialized.
[Serializable()]
public class TestSimpleObject
{

public int member1;
public string member2;
public string member3;
public double member4;

// A field that is not serialized.
[NonSerialized()]
public string member5;

public TestSimpleObject()
{

member1 = 11;
member2 = "hello";
member3 = "hello";
member4 = 3.14159265;
member5 = "hello world!";
}


public void Print()
{

Console.WriteLine("member1 = '{0}'", member1);
Console.WriteLine("member2 = '{0}'", member2);
Console.WriteLine("member3 = '{0}'", member3);
Console.WriteLine("member4 = '{0}'", member4);
Console.WriteLine("member5 = '{0}'", member5);
}
}