TreeListNodeAllowEventArgs Class

Provides data for the TreeListView.NodeExpanding and TreeListView.NodeCollapsing events.

Namespace: DevExpress.Xpf.Grid.TreeList

Assembly: DevExpress.Xpf.Grid.v20.2.dll

NuGet Packages: DevExpress.WindowsDesktop.Wpf.Grid.Core, DevExpress.Wpf.Grid.Core

Declaration

C#

public class TreeListNodeAllowEventArgs :
    TreeListNodeEventArgs

VB.NET

Public Class TreeListNodeAllowEventArgs
    Inherits TreeListNodeEventArgs

Related API Members

TreeListNodeAllowEventArgs is the data class for the following events:

• TreeListView.NodeCollapsing
• TreeListView.NodeExpanding

Remarks

The TreeListView.NodeExpanding and TreeListView.NodeCollapsing events occur when a node is about to be expanded or collapsed, allowing the action to be cancelled.

To cancel the action, set the event parameter’s TreeListNodeAllowEventArgs.Allow property to false. The processed node is returned by the TreeListNodeEventArgs.Node property.

To learn more, see Expanding and Collapsing Nodes .

Inheritance

Object

EventArgs

RoutedEventArgs

TreeListNodeEventArgs

TreeListNodeAllowEventArgs

TreeListShowingNodeFooterEventArgs