DxTreeView.SelectionChanged Event

Fires after node selection has been changed.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v23.2.dll

NuGet Package: DevExpress.Blazor

Declaration

[Parameter]
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.

Remarks

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

<DxTreeView AllowSelectNodes="true" 
            SelectionChanged="@SelectionChanged">
    @* ... *@
</DxTreeView>

@code  {
    string SelectedGroup = "none";

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

Run Demo: TreeView - Selection