C#EventDriven_Human_2а

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

namespace EventDrive2a
{
    public delegate void IntroduedEventHandler(object sender, EventArgs e);
    class Human
    {
        private string name;
        private int age;

        public event IntroduedEventHandler Introduced;

//        public event IntroduedEventHandler Introduced {
//            add {/*... */}
//            remove { /* ... */}
//        }

        protected virtual void OnIntroduced(EventArgs e)
        {
            if (Introduced != null)
            {
                Introduced(this, e);
            }
        }

        public string Name
        {
            get { return name; }
            set { name = value; }
        }

        public int Age
        {
            get { return age; }
            set { age = value; }
        }

        public Human(string name, int age)
        {
            this.name = name;
            this.age = age;
        }

        public void IntroduceYourSelf()
        {
            // 1. Static with hard coded method
            // OnIntroduCeYourSelf();

            // 2. with delagate and event
            // if (Introduced != null) {
            //     Introduced();
            // }

            // 3. key word evenet,  OnIntroduced, delegate changed 2 parameters
            OnIntroduced(EventArgs.Empty);

            Console.WriteLine("I ama a human! My name is {0}. I am {1} years old!", name, age);
        }

        private void OnIntroduCeYourSelf()
        {
            Console.WriteLine("I am an event handler!");
        }
    }
}