class MainClass
    {
        public static void Main ()
        {
            Action<dynamic[]> act = FirstMethod;
            dynamic[] args = { 1, 2, "qkakaka", "jjjj" };
            act (args);

            dynamic[] argss = { "qwe", "asd", "qwerty" };
            act = SecondMethod;
            act (argss);
        }

        private static void FirstMethod(params dynamic[] args)
        {
            foreach (var arg in args) {
            }
            Console.WriteLine (args[2]);
        }

        private static void SecondMethod(params dynamic[] args)
        {
            foreach (var arg in args) {
            }
            Console.WriteLine (args[2]);
        }
    }