Add event to a class - CSharp Custom Type

CSharp examples for Custom Type:Event

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Description

Add event to a class

Demo Code

using static System.Console;
using System;// w ww .j a  v a  2 s  .  c o m
using System.Collections.Generic;
using System.Text.RegularExpressions;
class Program
{
   static void Main(string[] args)
   {
      var harry = new Person { Name = "Harry" };
      var mary = new Person { Name = "Mary" };
      var jill = new Person { Name = "Jill" };
      harry.Shout += Harry_Shout;
      harry.Poke();
      harry.Poke();
      harry.Poke();
      harry.Poke();
   }
   private static void Harry_Shout(object sender, EventArgs e)
   {
      Person p = (Person)sender;
      WriteLine($"{p.Name} is this angry: {p.AngerLevel}.");
   }
}
public class Person : IComparable<Person>
{
   public string Name;
   public DateTime DateOfBirth;
   public List<Person> Children = new List<Person>();
   public int CompareTo(Person other)
   {
      return Name.CompareTo(other.Name);
   }
   public event EventHandler Shout;
   public int AngerLevel;
   public void Poke()
   {
      AngerLevel++;
      if (AngerLevel >= 3)
      {
         if (Shout != null)
         {
            Shout(this, EventArgs.Empty);
         }
      }
   }
}

Result


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