C#_delegate - 调用列表 计算阶乘

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace Delegate

{

    public delegate int Myfunction(ref int refCount);

    class Program

    {

        static void Main(string[] args)

        {

            Myfunction[] mfs = { MethodA, MethodA, MethodA, MethodA, MethodA};

            Myfunction del = (Myfunction)Myfunction.Combine(mfs);

            int refCount = 1;

            int result = 1;

            foreach(Myfunction mf in del.GetInvocationList())

            {

                result = result* mf(ref refCount);

            }

            Console.WriteLine("del.GetInvocationList(): " + del.GetInvocationList().Length);

            Console.WriteLine("result: "+result);

            Console.ReadLine();

        }

        public static int MethodA(ref int refCount)

        {

            return refCount++;

        }

    }

}