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   [Collapse]ASPxClientTreeList Class
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    [Expand]ASPxClientTreeList Methods
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    ASPxClientTreeListEndDragNodeEventHandler Delegate
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    ASPxClientTreeListFocusedCellChangingEventHandler Delegate
   [Expand]ASPxClientTreeListNodeEventArgs Class
    ASPxClientTreeListNodeEventHandler Delegate
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    ASPxClientTreeListStartDragNodeEventHandler Delegate
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    ASPxClientTreeListToolbarItemClickEventHandler Delegate
    ASPxClientTreeListValuesCallback Delegate
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 End-User Documentation

ASPxClientTreeList.NodeCollapsing Event

Fires before a node is collapsed.

Namespace:DevExpress.Web.ASPxTreeList.Scripts
Assembly:JavaScript

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type ASPxClientTreeListNodeEventArgs containing data related to this event.

The following ASPxClientTreeListNodeEventArgs properties provide information specific to this event.
Property Description
cancel Gets or sets a value indicating whether the action which raised the event should be canceled.
htmlEvent Provides access to the parameters associated with the NodeClick and NodeDblClick events.
nodeKey Gets the processed node's key value.

Expanded 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.

Expanded See Also

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