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

namespace AnonymousMethod
{
    class DelegateTypeVsAnonymousMethod : Form
    {
        // Delegate 타입
        public delegate int SumDelegate(int a, int b);

        public DelegateTypeVsAnonymousMethod()
        {
            // Delegate 사용
            SumDelegate sumDel = new SumDelegate(MySum);
            int result = sumDel(1, 2);

            // 무명메서드1
            this.Click += new EventHandler(delegate(object sender, EventArgs e)
                {
                    MessageBox.Show("Way1");
                });

            // 무명메서드2
            this.Click += (EventHandler)delegate(object sender, EventArgs e)
            {
                MessageBox.Show("Way2");
            };

            // 무명메서드3
            this.Click += delegate 
            { 
                MessageBox.Show("Way3"); 
            };
        }

        private int MySum(int a, int b)
        {
            return 0;
        }
    }
}