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TreeListNode.Expanded Property

Gets or sets whether the node is expanded.

Namespace: DevExpress.XtraTreeList.Nodes

Assembly: DevExpress.XtraTreeList.v24.1.dll

NuGet Packages: DevExpress.Win.Navigation, DevExpress.Win.TreeList

Declaration

[DefaultValue(false)]
[DXCategory("Behavior")]
public virtual bool Expanded { get; set; }

Property Value

Type Default Description
Boolean false

true if the node is expanded; otherwise, false.

Remarks

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.

Example

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

using DevExpress.XtraTreeList.Nodes;

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

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the Expanded property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

See Also