A method that will handle the ASPxClientRibbon.ActiveTabChanged event.
The event source. Identifies the ASPxRibbon control that raised the event.
A ASPxClientRibbonTabEventArgs object that contains event data.
When creating a ASPxClientRibbonTabEventHandler<Sender> delegate, you identify the method that will handle the corresponding event. To associate an event with your event handler, add a delegate instance to this event. The event handler is called whenever the event occurs unless you remove the delegate. For more information about event handler delegates, see Events and Delegates in MSDN.