TreeList.HierarchyColumn Property

Gets or sets the column in which tree list nodes display their expand/collapse buttons.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v24.1.dll

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

Declaration

C#

[DefaultValue(null)]
[DXCategory("Data")]
public TreeListColumn HierarchyColumn { get; set; }

VB.NET

<DXCategory("Data")>
<DefaultValue(Nothing)>
Public Property HierarchyColumn As TreeListColumn

Property Value

Type	Default	Description
TreeListColumn	null	A TreeListColumn object specifying the column in which tree list nodes display their expand/collapse buttons.

Remarks

By default, the HierarchyColumn is set to null. In this case, tree list nodes that have children display their expand/collapse buttons in the first column, as in the figure below.

Use the HierarchyColumn property to explicitly specify the column that will display the node expand/collapse buttons.

C#

treeList1.HierarchyColumn = colLOCATION;

VB.NET

treeList1.HierarchyColumn = colLOCATION

You can also specify the hierarchy column with the TreeList.HierarchyFieldName property. The TreeList.HierarchyFieldName property has priority over the HierarchyColumn property.