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TreeListNodeAllowEventArgs Class

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

Namespace: DevExpress.Xpf.Grid.TreeList

Assembly: DevExpress.Xpf.Grid.v18.2.dll


public class TreeListNodeAllowEventArgs :


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 .

See Also