ASPxTreeList.NodeCollapsing Event

Fires before a node is collapsed.

Namespace: DevExpress.Web.ASPxTreeList

Assembly: DevExpress.Web.ASPxTreeList.v18.2.dll

Declaration

C#

public event TreeListNodeCancelEventHandler NodeCollapsing

VB.NET

Public Event NodeCollapsing As TreeListNodeCancelEventHandler

Event Data

The NodeCollapsing event's data class is TreeListNodeCancelEventArgs. The following properties provide information specific to this event:

Property	Description
Cancel	Gets or sets whether the operation performed on the processed node should be cancelled.
Node	Gets the node currently being processed. Inherited from TreeListNodeEventArgs.

Remarks

Handle the NodeCollapsing event to specify whether the node is allowed to be collapsed. To cancel this action, set the event parameter’s cancel property to true.

To learn more, see Expanding and Collapsing Nodes.