Win Form.Close Handler

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Looch - 21 Sep 2007 16:24 GMT

Hi All,

How can I add a handler to the closing of a windows form if the user
selects the 'X' in the upper right hand corner of a form? Basically
I'd like to make sure that certain text boxes are filled in before the
form can be closed. I haven't had the need for handlers untill now so
I'm definately new at this!

Thanks in advance

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Nicholas Paldino [.NET/C# MVP] - 21 Sep 2007 16:41 GMT

Looch,

Have you taken a look at the Closing event on the Form class? If the
form isn't filled out the way you need it to be, you can cancel the
operation.

Also, you might want to look at the Validating event as well.

Signature

- Nicholas Paldino [.NET/C# MVP]
- mvp@spam.guard.caspershouse.com

> Hi All,
>
[quoted text clipped - 5 lines]
>
> Thanks in advance

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Peter Duniho - 21 Sep 2007 19:36 GMT

> Have you taken a look at the Closing event on the Form class? If the
> form isn't filled out the way you need it to be, you can cancel the
> operation.

As of .NET 2.0 (I believe), the FormClosing event is the preferred event
to use.

> Also, you might want to look at the Validating event as well.

Agreed. Each control can raise a Validating event, and the handler for
that event can indicate the control isn't valid, preventing the form
from closing.

Pete

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Win Form.Close Handler

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