wpf-devexpress-dot-xpf-dot-navbar-dot-explorerbarview.md
Fires after the expanded state of a group has been changed.
Namespace : DevExpress.Xpf.NavBar
Assembly : DevExpress.Xpf.NavBar.v25.2.dll
NuGet Package : DevExpress.Wpf.NavBar
public event NavBarGroupExpandedChangedEventHandler GroupExpandedChanged
Public Event GroupExpandedChanged As NavBarGroupExpandedChangedEventHandler
The GroupExpandedChanged event's data class is NavBarGroupExpandedChangedEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Group | Gets a group object related to the event. |
| Handled | Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs. |
| IsExpanded | Gets a value indicating whether the processed group is expanded. |
| OriginalSource | Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs. |
| RoutedEvent | Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs. |
| Source | Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs. |
The event data class exposes the following methods:
| Method | Description |
|---|---|
| InvokeEventHandler(Delegate, Object) | When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs. |
| OnSetSource(Object) | When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs. |
Write an GroupExpandedChanged event handler to perform specific actions each time a group’s expanded state changes within the NavBarControl.
To learn more, see the Expand and Collapse Groups and Expanded Group topics.
See Also