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V25.1
  • TreeViewControl.CanSelectNode Event

    Occurs when a user tries to select a node and allows you to control whether a user can select a particular node.

    Namespace: DevExpress.Xpf.Grid

    Assembly: DevExpress.Xpf.Grid.v25.1.dll

    NuGet Package: DevExpress.Wpf.Grid.Core

    Declaration

    public event CanSelectNodeEventHandler CanSelectNode

    Event Data

    The CanSelectNode event's data class is DevExpress.Xpf.Grid.TreeList.CanSelectNodeEventArgs.

    Remarks

    Set the TreeViewControl.SelectionMode property to the Cell/Row/MultipleRow value to use the CanSelectNode event.

    The following code sample does not allow users to select root nodes.

    <dxg:TreeViewControl x:Name="treeview"
                         CanSelectNode="treeview_CanSelectNode"
                         SelectionMode="Row"/>
    
    void treeview_CanSelectNode(object sender, DevExpress.Xpf.Grid.TreeList.CanSelectNodeEventArgs e) {
        e.CanSelectNode = e.Node.Level != 0;
    }
    

    Handle the CanUnselectNode event to control whether a user can unselect a particular node.

    See Also