C# event handlers not thread safe?

Posted by Daniel on Stack Overflow See other posts from Stack Overflow or by Daniel
Published on 2010-04-06T01:01:57Z Indexed on 2010/04/06 1:03 UTC
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Filed under:

c#

|

events

|

thread

|

safe

So i've read around that instead of calling a event directly with

if (SomeEvent != null)
   SomeEvent(this, null);

i should be doing

SomeEventHandler temp = SomeEvent;
if (temp != null)
    temp(this, null);

Why is this so? How does the second version become thread safe? What is the best practice?

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