Fires before a node is collapsed.
Namespace: DevExpress.Web.ASPxTreeList
Assembly: DevExpress.Web.ASPxTreeList.v19.2.dll
public event TreeListNodeCancelEventHandler NodeCollapsingPublic Event NodeCollapsing As TreeListNodeCancelEventHandlerThe NodeCollapsing event handler receives an argument of the TreeListNodeCancelEventArgs type. 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)
|
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.