using System;

using System.Collections.Generic;

using System.Timers;

​

    public class Program

    {

        public static void Main()

        {

            new Testeqzdr();

        }

    }

    class DummyElement

    {

        public DummyElement()

        {

​

        }

    }

    class Tester

    {

        List<DummyElement> list;

        public Tester()

        {   

            list = new List<DummyElement>();

            for (int i = 0; i < 1000; i++)

            {

                Timer addTimer = new Timer(0.01f);

                addTimer.Start();

                addTimer.Elapsed += AddCallback;

                Timer removeTimer = new Timer(0.01f);

                removeTimer.Start();

                removeTimer.Elapsed += RemoveCallback;

            }

        }

​

        void AddCallback(object source, ElapsedEventArgs e)

        {

            list.Add(new DummyElement());

        }

​

        void RemoveCallback(object source, ElapsedEventArgs e)

        {

            int listCount = list.Count;

            if (listCount > 0)

            {

                int index = new Random().Next(0, listCount - 1);

                list.RemoveAt(index);

            }

        }

}

​