using System;

​

​

​

public class events

{

    public delegate string messages(string msg);

    public event messages mymessage;

    public events() => this.mymessage += new messages(this.show);

    public string show(string user) => "Wellcome"+user;

}

​

public class Program

{

    public static void Main()

    {

        events e = new events();

        string result = e.show("Muhammad Talha"); 

        Console.WriteLine(result);

    }

}