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RadDesktopAlertOpening Event
Fires when the alert's popup is about to be opened. The opening action can be canceled by modifying the arguments of this event.

Namespace: Telerik.WinControls.UI
Assembly: Telerik.WinControls.UI (in Telerik.WinControls.UI.dll) Version: 2017.2.613.40 (2017.2.613.40)
Syntax
public event RadPopupOpeningEventHandler Opening

Value

Type: Telerik.WinControls.UIRadPopupOpeningEventHandler
See Also