Thanks a lot for your help.

I have prove it and this work perfectly.

Sorry for my english.
I have made a windows form application.
My application is a Mdicontainer with many child form.
I want to check che closed event of this form, and when happend i want to...

I have a problem, with a closed form event.
I'd like to make a check with a click on close botton in the title bar that check if the user are sure or not to close the application.
I have made a...