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Код

namespace CustomSerialization
{
    using System;
    using System.IO;
             using System.Runtime.Serialization;
    using System.Runtime.Serialization.Formatters.Binary;
    public class Class1
    {

        public static int Main(string[] args)
        {
            // Make a car and listen to the tunes.
            Console.WriteLine("Making car...");
            CustomCarType myAuto = new CustomCarType("Siddhartha", 50);
            
            // Create a file stream.
            Console.WriteLine("Making *.dat file...");
            Stream myStream = File.Create("CarData.dat");
            
            // Move our graph into the stream using a binary format.
            Console.WriteLine("Saving to file.");
            BinaryFormatter myBinaryFormat = new BinaryFormatter();
            myBinaryFormat.Serialize(myStream, myAuto);
            myStream.Close();

            Console.WriteLine("Reading from file.");
            myStream = File.OpenRead("CarData.dat");

            CustomCarType carFromDisk = 
            (CustomCarType)myBinaryFormat.Deserialize(myStream);

            Console.WriteLine(carFromDisk.petName + " is alive!");
            myStream.Close();

            return 0;
        }
    }
[Serializable]
    public class CustomCarType : ISerializable
    {
        public string petName;
        public int maxSpeed;

        public CustomCarType(string s, int i)
        { petName = s; maxSpeed = i;}

        // Impl of ISerializable interface
        public void GetObjectData(SerializationInfo si, StreamingContext ctx)
        {
            // What context is the stream?
            Console.WriteLine("[GetObjectData] Context State: " + ctx.State.ToString());

            // Fill the SerializationInfo type with out info.
            si.AddValue("CapPetName", petName);
            si.AddValue("maxSpeed", maxSpeed);
        }

        // You must supply a custom ctor with this signature
        // to allow the runtime engine to
        // set the state of your object.
        private CustomCarType(SerializationInfo si, StreamingContext ctx)
        {
            // What context is the stream?
            Console.WriteLine("[ctor] Context State: " + ctx.State.ToString());

            // Re-hydrate a new object based on incoming 
            // SerializationInfo type.
            petName = si.GetString("CapPetName");
            maxSpeed = si.GetInt32("maxSpeed");
        }
    }
}