Event trigger inside another class instaed initialized place

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{

    public partial class Receiver
    {
        public partial class Form1 : Form
        {
            Receiver receiver = new Receiver();

            public Form1()
            {
                InitializeComponent();

            }

            private void button1_Click(object sender, EventArgs e)
            {
                // наше событие, которое будет триггерить
                receiver.Received(new List<string> { "the string" });
            }
        }
    }


    public delegate void OnReceived(List<string> args);

    interface IReceived
    {
        event OnReceived Received;
    }

    // [ImmutableObject(false)]
    // [Inheritance]
    public partial class Receiver : IReceived
    {
        public event OnReceived Received;


    }

    public class Target
    {

    }

}