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DxTreeView.SelectionChanged Event

Fires after node selection has been changed.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v23.2.dll

NuGet Package: DevExpress.Blazor


public EventCallback<TreeViewNodeEventArgs> SelectionChanged { get; set; }

Event Data

The SelectionChanged event's data class is TreeViewNodeEventArgs. The following properties provide information specific to this event:

Property Description
CausedByAPI Obsolete. Specifies whether an event was triggered by a user action or programmatically.
NodeInfo Returns information about a node related to the event.
Reason Returns the reason why the TreeView node’s state changes.


Write a SelectionChanged event handler to perform specified actions each time a node selection is changed by end-user interaction.

<DxTreeView AllowSelectNodes="true" 
    @* ... *@

@code  {
    string SelectedGroup = "none";

    void SelectionChanged(TreeViewNodeEventArgs e) {
        SelectedGroup = e.NodeInfo.Text;

TreeView Node Selection

Run Demo: TreeView - Selection

See Also