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ExplorerBarView.GroupExpandedChanged Event

Fires after the expanded state of a group has been changed.

Namespace: DevExpress.Xpf.NavBar

Assembly: DevExpress.Xpf.NavBar.v24.1.dll

NuGet Package: DevExpress.Wpf.NavBar

Declaration

public event NavBarGroupExpandedChangedEventHandler GroupExpandedChanged

Event Data

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.

Remarks

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