using System;

using System.Collections.Concurrent;

using System.Threading;

​

public class Program

{

    public static void Main()

    {

        ConcurrentBag<int> bag = new();

        for (int i = 1; i <= 5; i++) bag.Add(i);

        Thread t = new(_ => { for (int i = 6; i <= 10; i++) bag.Add(i); });

        t.Start();

        t.Join();

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

        Console.Write("Consumed: ");

        while (bag.TryTake(out int item)) Console.Write($"{item}, ");

    }

}

​