ASPxClientTreeViewNode.SetExpanded(value) Method

Sets a value which specifies the node’s expansion state.

Declaration

SetExpanded(
    value: boolean
): void

Parameters

Name	Type	Description
value	boolean	true if the node is expanded; otherwise, false.

Remarks

Use the SetExpanded property to collapse or expand a node on the client-side. In order to determine the node’s expansion state use the ASPxClientTreeViewNode.GetExpanded method on the client side.

To learn more, see the Expanding and Collapsing Nodes topic.

Example

The code below shows how you can handle the client NodeClick event to expand and collapse nodes with a click.

ASPX

   <dx:aspxtreeview id="ASPxTreeView1" runat="server" datasourceid="XmlDataSource1">
    <ClientSideEvents NodeClick="function(s, e) {
    e.node.SetExpanded(!e.node.GetExpanded());
    }"></ClientSideEvents>
   </dx:aspxtreeview>