Preventing a dialog from closing in the button's click event handler

Posted by qster on Stack Overflow See other posts from Stack Overflow or by qster
Published on 2010-03-23T12:03:05Z Indexed on 2010/03/23 12:13 UTC
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c#

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.NET

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winforms

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Windows

I have a dialog that I show with <class>.ShowDialog(). It has an OK button and a Cancel button; the OK button also has an event handler.

I want to do some input validation in the event handler and, if it fails, notify the user with a message box and prevent the dialog from closing. I don't know how to do the last part (preventing the close).

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