ExplorerBarView.GroupExpandedChanging Event
Fires before the expanded state of a group is changed.
Namespace: DevExpress.Xpf.NavBar
Assembly: DevExpress.Xpf.NavBar.v24.2.dll
NuGet Package: DevExpress.Wpf.NavBar
#Declaration
#Event Data
The GroupExpandedChanging event's data class is NavBarGroupExpandedChangingEventArgs. The following properties provide information specific to this event:
Property | Description |
---|---|
Cancel | Gets or sets a value indicating whether the operation which raised an event should be canceled. |
Group |
Gets a group object related to the event.
Inherited from Nav |
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 Routed |
Is |
Gets a value indicating whether the processed group is expanded.
Inherited from Nav |
Original |
Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class.
Inherited from Routed |
Routed |
Gets or sets the Routed |
Source |
Gets or sets a reference to the object that raised the event.
Inherited from Routed |
The event data class exposes the following methods:
Method | Description |
---|---|
Invoke |
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 Routed |
On |
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 Routed |
#Remarks
The GroupExpandedChanging event occurs when a group’s expanded state is going to be changed within the NavBarControl. This event allows you to cancel the group expanded state change, if required.
To learn more, see the Expand and Collapse Groups and Expanded Group topics.