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Editorial Team
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Asked: 2026-05-14T05:53:37+00:00

Say I have two classes, and neither of them are GUI components. Class A

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Say I have two classes, and neither of them are GUI components. Class A is a short lived object that registers for an event declared by a long lived object B. For example

public A(B b)
{
   b.ChangeEvent += OnChangeEvent;
}

If A never deregisters from B’s event, will A never be garbage collected? Does A need a Dispose method just to deregister from B’s event?

There is also a related second question. If A and B should both live for the entire execution time of the application, does A need to deregister?

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1 Answer

  1. Editorial Team

    To your first question: Yes. B has a reference to A. That way A will live as long as B. This is a nice way to loose memory in a UI app if you e.g. register with an event like App.OnIdle.

    To the second: At the end everything will be killed.

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