DxTreeView.NodeExpandCollapseAction Property

Specifies user actions that expand or collapse a node.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v25.1.dll

NuGet Package: DevExpress.Blazor

Declaration

[DefaultValue(TreeViewNodeExpandCollapseAction.Auto)]
[Parameter]
public TreeViewNodeExpandCollapseAction NodeExpandCollapseAction { get; set; }

Property Value

Type	Default	Description
TreeViewNodeExpandCollapseAction	Auto	A TreeViewNodeExpandCollapseAction enumeration value.

Available values:

Name	Description
Auto	When node selection is disabled, users can click a node or its Expand/Collapse button to expand/collapse the node. When node selection is enabled, users can double click a node or click its Expand/Collapse button to expand/collapse the node.
NodeClick	Users can click a node or its Expand/Collapse button to expand/collapse the node.
NodeDoubleClick	Users can double click a node or click the node’s Expand/Collapse button to expand/collapse the node.
ButtonClick	Users can click a node’s Expand/Collapse button to expand/collapse the node.

Remarks

To expand/collapse a TreeView node, users should click the node or its Expand/Collapse button. If node selection is enabled, users should double-click nodes or click the Expand/Collapse buttons.

Use the NodeExpandCollapseAction property to change these user actions. For instance, the following example expands/collapses nodes when users click the Expand/Collapse buttons:

<DxTreeView NodeExpandCollapseAction="TreeViewNodeExpandCollapseAction.ButtonClick" ...> 
    @* ... *@
</DxTreeView>