using System;

using System.Threading;

public class Program

{

    private static ManualResetEvent _event = new ManualResetEvent(false);

    public static void Main()

    {

        var thread = new Thread(() =>

        {

            for (int i = 0; i < 5; i++)

            {

                Console.WriteLine($"Tick {i}");

                Thread.Sleep(250);

            }

            _event.Set();

        });

        Console.WriteLine("Before Wait One");

        thread.Start();

        _event.WaitOne();

        Console.WriteLine("After Wait One");

    }

}