using System;

using System.Collections.Generic;

using System.Runtime.Serialization.Formatters.Binary;

using System.IO;

public class Program

{

    public static void Main()

    {

        Dictionary<string, float> dict = new Dictionary<string, float>();

        dict.Add("First", 123.0f);

        dict.Add("Second", 321.0f);

        BinaryFormatter formatter = new BinaryFormatter();

        byte[] serialized;

        Dictionary<string, float> deserialized;

        using(MemoryStream stream = new MemoryStream())

        {

            formatter.Serialize(stream, dict);

            serialized = stream.ToArray();

        }

        using(MemoryStream stream = new MemoryStream(serialized))

        {

            deserialized = formatter.Deserialize(stream) as Dictionary<string, float>;

        }

        foreach(var pair in dict)

            Console.WriteLine(pair);

        foreach(var pair in deserialized)

            Console.WriteLine(pair);

    }

}