What happens if I call a event handler declared inside a function that is not being executed?

Question

Something like this:

    void SomeFunc()
    {
        int InsideVar = 1;
        EventHandler handler = (s, e) => { MessageBox.Show(InsideVar.ToString()); };
        SomeEvent += handler;
    }

And then SomeEvent is invoked after SomeFunc is executed. I actually tested it and it worked but cannot understed why. I thought InsideVar would be on the stack and would stop existing after the function is executed. I was expecting an exception. Can someone clarify this please?

While not an exact duplicate, this question will tell you all you need to know: http://stackoverflow.com/questions/428617/what-are-closures-in-net — spender, Jun 28 '10 at 19:38

score 4 · Answer 1 · answered Jun 28 '10 at 19:37

4

You've just discovered closures.

answered Jun 28 '10 at 19:37

anthony

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What happens if I call a event handler declared inside a function that is not being executed?

1 Answers1