BinaryFormatter binder sample

binder_sample.cs

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

class Program
{
    static void Main(string[] args)
    {
        Stream inputStream = GetInputStream();
        BinaryFormatter formatter = new BinaryFormatter();
        formatter.Binder = new MySerializationBinder();
        Person deserialialized = (Person)formatter.Deserialize(inputStream);
    }
}

[Serializable]
public class Person
{
    public string FirstName;
    public string LastName;
}

class MySerializationBinder : SerializationBinder
{
    public override Type BindToType(string assemblyName, string typeName)
    {
        // If the input stream contained the old assembly name for this type,
        // return typeof(...) to tell the serializer that it should map the
        // old names to the specified Type.

        if (typeName == typeof(Person).FullName && assemblyName == "OldAssembly, Version=1.0.0.0, ...")
        {
            return typeof(Person);
        }

        return null; // let the default binder logic kick in
    }
}