Do you need to remove an event handler in the destructor?

Question

I use some UserControls which get created and destroyed within my application during runtime (by creating and closing subwindows with these controls inside).
It

Answer 1

2) This does work

1) I had a case ( with an In-App messaging service ) that event handlers to a global object where not released and the GC couldn't collect the object because of that. I think this is usually a rare condition - using a profiler like ANTS from red gate you could easily do a memory profiling if you think this happens to to you.