Is there anything wrong with using lambda for winforms event?

Question

This is a very simple question. I\'m asking because I\'ve never seen it before which makes me wonder if there\'s something wrong.

comboBox1.MouseEnter += (a         


        

Answer 1

It is fine; the only subtle point is if you need to unsubscribe it; then you need to store the delegate locally too:

EventHandler handler = (s,a) => ...
obj.SomeEvent += handler;
...
obj.SomeEvent -= handler;

Note that if I'm not using either parameter (sender/args) I prefer the anon method syntax:

obj.SomeEvent += delegate {...};

As this doesn't introduce any extra (unnecessary) variables into scope.