class App
{
    public delegate void StopHandler();
    public event StopHandler OnStop;

    private bool keepAlive = true;

    public App()
    {
        OnStop += (() => { keepAlive = false; });

        new Thread(() => CheckForStop()).Start();
        new Thread(() => Update()).Start();

        while (keepAlive) { }
    }

    private void CheckForStop()
    {
        while (keepAlive) if (Console.ReadKey().Key.Equals(ConsoleKey.Enter)) OnStop();
    }

    private void Update()
    {
        int counter = 0;

        while (keepAlive)
        {
            counter++;

            Console.WriteLine(string.Format("[{0}] Update #{1}", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), counter));

            Thread.Sleep(3000);
        }
    }
}