Serialization methods

using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization.Formatters.Soap;
using System.Xml.Serialization;


class Program
{
    static void Main(string[] args)
    {
        FileStream fs = new FileStream("BinarySerializedObject.data", FileMode.Create);
        BinaryFormatter bf = new BinaryFormatter();
        ShoppingCartItem sci = new ShoppingCartItem (123, 322.5m, 1254);
        bf.Serialize(fs, sci);

        fs.Flush();
        fs.Close();
        FileStream fs2 = new FileStream("SoapSerializedObject.xml", FileMode.Create);
        SoapFormatter sf = new SoapFormatter();
        
        sf.Serialize(fs2, sci);

        fs2.Flush();
        fs2.Close();
        sci = null;
        FileStream fs3 = new FileStream("BinarySerializedObject.data", FileMode.Open);
        sci = (ShoppingCartItem)bf.Deserialize(fs3);
        System.Console.WriteLine(sci.ToString());
        fs3.Close();
        FileStream fs4 = new FileStream("SoapSerializedObject.xml", FileMode.Open);
        sci = (ShoppingCartItem)sf.Deserialize(fs4);
        System.Console.WriteLine(sci.ToString());
        fs4.Close();
        FileStream fs5 = new FileStream("XMLSerializedObject.xml", FileMode.Create);
        XmlSerializer  xf = new XmlSerializer(typeof(ShoppingCartItem));
        xf.Serialize(fs5, sci);

        fs5.Flush();
        fs5.Close();
        sci = null;
        FileStream fs6 = new FileStream("XMLSerializedObject.xml", FileMode.Open);
        sci = (ShoppingCartItem) xf.Deserialize(fs6);
        
        System.Console.WriteLine(sci.ToString());
        fs6.Close();
    }
}