WPF_Practice/PacticeSolution/DelegateEventFuncAction/DelegateTest.cs

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

namespace DelegateEventFuncAction
{
    public class DelegateTest
    {
        public delegate void FunctionPointer();

        private static void Print1()
        {
            Console.WriteLine("Print 1");
        }

        private static void Print2()
        {
            Console.WriteLine("Print 2");
        }

        private static void Print3()
        {
            Console.WriteLine("Print 3");
        }

        private static void Print4()
        {
            Console.WriteLine("Print 4");
        }

        private static void Execute(FunctionPointer fp)
        {
            fp();
        }

        public static void DoTest1()
        {
            Execute(Print1);
            Execute(Print2);
            Execute(Print3);
            Execute(Print4);
        }

        public static void DoTest2()
        {
            // delegate chain
            FunctionPointer fp = new FunctionPointer(Print1);
            fp += Print2;
            fp += Print3;
            fp += Print4;

            fp();
        }
    }
}