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Home/ Questions/Q 6730695
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Editorial Team
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Editorial Team
Asked: May 26, 20262026-05-26T10:26:21+00:00 2026-05-26T10:26:21+00:00

I close form with form.Dispose() but i have problem that all opened MessageBoxes does

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I close form with form.Dispose() but i have problem that all opened MessageBoxes does not close. They are still opened. How to close all MessageBoxes when closing form? Is this possible?

I am using compact framework 3.5

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  1. Editorial Team
    Editorial Team
    2026-05-26T10:26:22+00:00Added an answer on May 26, 2026 at 10:26 am

    This isn’t possible. MessageBox wraps the user32.MessageBox API, which blocks the thread that it is called on until the user responds. They’re designed to be modal and you’d have to kill your process to close them.

    You could write your own MessageBox implementation using forms, and use ShowDialog to make them modal. That way you could close them yourself.

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