c# Action is just a delegate

for example

      public static void DoIt(int a, Action<int> act)

        {

            Console.WriteLine("$$$$$$$$$$$$$$$$$");

            act(a);

            Console.WriteLine("$$$$$$$$$$$$$$$$$");

        }

 is equivalent to:

        public delegate void action<T>(T item);

        public static void DoIt2(int a, action<int> act)

        {

            Console.WriteLine("$$$$$$$$$$$$$$$$$");

            act(a);

            Console.WriteLine("$$$$$$$$$$$$$$$$$");

        }

       

        static void Main(string[] args)

        {

           

            DoIt(56, write);

            DoIt(56, writeTwice);

            DoIt2(56, write);

            DoIt2(56, writeTwice);