using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EventsExercise
{
    public delegate void EventHandler();

    public class Program
    {
        public static event EventHandler subscribe;

        static void Main(string[] args)
        {
            Button btn1 = new Button("Armando");
            subscribe += new EventHandler(btn1.Subscribe);

            Button btn2 = new Button("Elizabeth");
            subscribe += new EventHandler(btn2.Subscribe);

            subscribe.Invoke();
        }
    }

    public class Button
    {
        public string Name { get; set; }

        public Button(string name)
        {
            this.Name = name;
        }

        public void Subscribe()
        {
            Console.WriteLine($"Succesfully subscribed, {this.Name}");
        }
    }
}