IEnumerable<Action<T>>の全実行拡張メソッド

Program.cs

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

namespace ConsoleApplication1
{
    public static class EnumerableExtensions
    {
        public static void Invoke<T>(this IEnumerable<Action<T>> actions, T value)
        {
            foreach (var action in actions)
            {
                action(value);
            }
        }
    }

    class Program
    {
        private static void Hoge(string value)
        {
            Console.WriteLine("Hoge " + value);
        }

        private static void Foo(string value)
        {
            Console.WriteLine("Foo " + value);
        }

        private static void Bar(string value)
        {
            Console.WriteLine("Bar " + value);
        }

        static void Main(string[] args)
        {
            var actions = new Action<string>[] { Hoge, Foo, Bar };


            // Combineするくらいなら
            var action = (Action<string>)Delegate.Combine(actions);
            action("Sho");

            // 拡張メソッド作った方が分かりやすい
            actions.Invoke("Sho");
        }
    }
}