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|evt||The event to handle.|
Handles an event according to its propagation phase and current target, by executing the element's default action, default action at target, or callbacks associated with the event.
The EventDispatcher may invoke this method multiple times for the same event: once for each
propagation phase and each target along the event's propagation path if it has matching callbacks or,
in the case of the leaf target, if it overrides default actions for the event.
Do not use this method to intercept all events whose propagation path include this element. There is no guarantee that it will or will not be invoked for a propagation phase or target along the propagation path if that target has no callbacks for the event and has no default action override that can receive the event.
Use CallbackEventHandler.RegisterCallback<TEventType>(EventCallback<TEventType>, TrickleDown), CallbackEventHandler.ExecuteDefaultAction, or CallbackEventHandler.ExecuteDefaultActionAtTarget for more predictable results.
See Also: CallbackEventHandler.RegisterCallback<TEventType>(EventCallback<TEventType>, TrickleDown), CallbackEventHandler.ExecuteDefaultAction, CallbackEventHandler.ExecuteDefaultActionAtTarget