confirmation before moving to another form

http://stackoverflow.com/questions/17796151/close-form-button-event

http://stackoverflow.com/questions/19720505/event-handler-used-to-close-a-windows-forms-application

http://stackoverflow.com/questions/1669318/override-standard-close-x-button-in-a-windows-form

http://forums.devshed.com/net-development-87/handle-form-closing-event-289917.html

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try this FormClosing event

http://www.codeproject.com/Questions/530753/howplustoplusmakeplusformplusunloadpluseventplusin

http://stackoverflow.com/questions/2905938/c-sharp-windows-form-on-close-do-process

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Its Desktop App and no unload event found

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I think you can do this via unload event of the form like in Web app you can do this via 'onbeforeunload' of body tag.

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