How to: Designate a Windows Forms Button as the Cancel Button Using the Designer
On any Windows Form, you can designate a Button control to be the cancel button. A cancel button is clicked whenever the user presses the ESC key, regardless of which other control on the form has the focus. Such a button is usually programmed to enable the user to quickly exit an operation without committing to any action.
To designate the cancel button
Select the form on which the button resides.
In the Properties window, set the form's CancelButton property to the Button control's name.
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