using System;

using ProtoBuf;

using System.Collections.Concurrent;

using System.IO;

public class Program

{

    public static void Main()

    {

        ConcurrentDictionary<string, int> dict1 = new();

        dict1.TryAdd("A", 1);

        dict1.TryAdd("B", 2);

        ConcurrentDictionary<string, int> dictX = new();

        dictX.TryAdd("C", 3);

        dictX.TryAdd("D", 4);

        Console.WriteLine($"dict1: {String.Join(", ", dict1)}");

        Console.WriteLine($"dictX: {String.Join(", ", dictX)}");

        MemoryStream stream = new();

        Serializer.Serialize(stream, dict1);

        Serializer.Serialize(stream, dictX);

​

        stream.Position = 0;

        ConcurrentDictionary<string, int> dict1PD = Serializer

            .Deserialize<ConcurrentDictionary<string, int>>(stream);

        ConcurrentDictionary<string, int> dictXPD = Serializer

            .Deserialize<ConcurrentDictionary<string, int>>(stream);

        Console.WriteLine($"dict1PD: {String.Join(", ", dict1PD)}");

        Console.WriteLine($"dictXPD: {String.Join(", ", dictXPD)}");

    }

}

​