using System;

​

​

public class Program

{

    public delegate void SampleEventHandler(object sender, SampleEventArgs e);

    public static event SampleEventHandler SampleEvent;

    public static void Main()

    {

        Console.WriteLine("Main thread: " + System.Threading.Thread.CurrentThread.ManagedThreadId);

        new System.Threading.Thread(() => {

            SampleEvent += (s, e) => {

                Console.WriteLine(System.Threading.Thread.CurrentThread.ManagedThreadId + " " + e.ID);

            };

            while(true)

            {

            }

        }).Start();

        new System.Threading.Thread(() => {

        Console.WriteLine("Sender thread: " + System.Threading.Thread.CurrentThread.ManagedThreadId);

        System.Threading.Thread.Sleep(100);

        for (var i = 0; i < 100; i ++)

        {

            SampleEvent.Invoke(null, new SampleEventArgs(i));

        }

        for (var i = 0; i < 100000; i +=2)

        {

            i-=1;

        }

        }).Start();

        System.Threading.Thread.Sleep(1000);

    }

}