How events are assigned in .NET

Posted by Matt on Stack Overflow See other posts from Stack Overflow or by Matt
Published on 2010-06-03T19:33:08Z Indexed on 2010/06/03 19:34 UTC
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I just realized I didn't fully understand why in .NET you assign events using a += symbol.

I figured this out yesterday when I needed to remove an event and without thinking I was doing

someobject.onsomeevent += null

thinking that would just remove the event I had previously assigned.

After some investigation, I figured out I had to

someobject.onsomeevent -= someeventmethod;

After figuring this out, I realized I don't understand how event methods are assigned in .NET.

So I have a few questions:

First, does it mean that I can do

someobject.onsomeevent += someeventmethod;
someobject.onsomeevent += someeventothermethod;

If so, when onsomeevent occurs will they both get hit, and in the order specified or simultaneously?

Furthermore, how can I determine what event methods are already assigned to someobject.onsomeevent?

Second, is there a way to save the events methods in some class, remove them from someobject.onsomeevent and re-assign them after some other procedures that would normally trigger the event are complete?

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