Fires when the current NavBarGroup is activated.
NuGet Package: DevExpress.Wpf.NavBar
The Activate event's data class is EventArgs.
The Activate event is raised when a NavBarGroup is activated (e.g., expanded via a mouse click) by an end-user. Use the NavBarGroup.Command property or handle the Activate event to respond to a user activating a group. Note that this event is triggered only when the group header is clicked. Clicking the expand/collapse button does not fire the Activate event.