Skip to main content

TreeListNode.Expanded Property

Gets or sets whether the node is expanded.

Namespace: DevExpress.XtraTreeList.Nodes

Assembly: DevExpress.XtraTreeList.v22.1.dll


public virtual bool Expanded { get; set; }

Property Value

Type Default Description


true if the node is expanded; otherwise, false.


Use the methods below to expand and collapse tree list nodes.

The control’s BeforeExpand, AfterExpand, BeforeCollapse, and AfterCollapse events fire during expand and collapse operations. For example, you can handle the BeforeExpand event to dynamically create child nodes in unbound mode.


The code below changes the first visible node’s expand state.

using DevExpress.XtraTreeList.Nodes;

TreeListNode node = treeList1.GetNodeByVisibleIndex(0);
node.Expanded = !node.Expanded;
See Also