c# – 在方法调用之间缓存哪些(如果有的话)本地定义的委托？

namespace Example
{
    class Dummy
    {
        public int age;
    }

    class Program
    {
        private int field = 10;

        static void Main(string[] args)
        {
            var p = new Program();

            while (true)
            {
                p.Work();
            }
        }

        void Work()
        {
            int local = 20;

            Action a1 = () => Console.WriteLine(field);
            Action a2 = () => Console.WriteLine(local);
            Action a3 = () => Console.WriteLine(this.ToString());
            Action a4 = () => Console.WriteLine(default(int));
            Func<Dummy,Dummy,bool> dummyAgeMatch = (l,r) => l.age == r.age;

            a1.Invoke();
            a2.Invoke();
            a3.Invoke();
            a4.Invoke();
            dummyAgeMatch.Invoke(new Dummy() { age = 1 },new Dummy(){ age = 2 });
        }
    }
}