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Syncfusion Feedback
Platform : WinForms
Category : Controls

A control’s Validating event is hit even when the user clicks on the Close box. How can I avoid this behavior

One way is to add code to your Validating handler and only execute the validation routine if the mouse is in the client area. This will avoid the click on the title bar and its system menu. You might also want to add special handling for the tab key so your validation is hit independent of the mouse location when you tab off the control.

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