How do I define a method in an anonymous type?

Question

How do I go about defining a method, e.g. void doSuff() in an anonymous type? All documentation I can find uses only anonymous restricted basically to property lists. Can I even define a method in an anonymous type?

EDIT: OK, a quick look at very quick answers tells me this is impossible. Is there any way at all to construct a type dynamically and add an anonymous method to a delegate property on that type? I'm looking for a C# way to accomplish what the following JavaScript does:

...
person.getCreditLimit = function() { ... }
...

Answer 1

Well, you can. With delegates you just treat methods as data:

var myMethods = from x in new[] { "test" }
                select new { DoStuff = new Func<string>(() => x) };

var method = myMethods.First();
var text = method.DoStuff();

What do you think the value of "text" is?

With the Action<> and Func<> generic types you can put (almost) whatever you want in there. Almost, because you cannot for instance access other properties on the anonymous type, like this:

var myMethods = from x in new[] { "test" }
                select new { Text = x, DoStuff = new Func<string>(() => Text) };

Answer 2

You absolutely can, with delegates:

Action action = MethoThatDoesSomething;
var obj = new
          {
              DoSomething = action
          };

obj.DoSomething();

I tried with a lambda in the new { ... } and that didn't work, but the above is totally fine.