Event自前実装の練習

EventPractice.cs

using System;

namespace EventPractice
{
    class TestEventArgs : System.EventArgs
    {
        public int Num;

        public TestEventArgs(int num)
        {
            this.Num = num;
        }
    }

    delegate void TestEventHandler(object source, TestEventArgs e);

    class TestEventClass
    {
        public event TestEventHandler Test;

        public void DoEvent(int num)
        {
            TestEventArgs args = new TestEventArgs(num);

            Test(this, args);

            Console.WriteLine("EventWrite");
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            TestEventClass testEventClass = new TestEventClass();

            testEventClass.Test += testEventClass_Test;

            int test = 12345;

            testEventClass.DoEvent(test);

            Console.ReadLine();
        }

        static void testEventClass_Test(object source, TestEventArgs e)
        {
            Console.WriteLine(e.Num);
        }
    }
}