Skip to main content
All docs
V25.1
  • TreeViewControl.ShowingEditor Event

    Occurs before a node’s editor is opened. Allows you to prevent the activation of the editor.

    Namespace: DevExpress.Xpf.Grid

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

    NuGet Package: DevExpress.Wpf.Grid.Core

    Declaration

    public event TreeViewShowingEditorEventHandler ShowingEditor

    Event Data

    The ShowingEditor event's data class is DevExpress.Xpf.Grid.TreeList.TreeViewShowingEditorEventArgs.

    Remarks

    The following code sample prevents the activation of the root node’s editor.

    <dxg:TreeViewControl x:Name="treeview"
                         ...
                         AllowEditing="True"
                         ShowingEditor="treeview_ShowingEditor"/>
    
    void treeview_ShowingEditor(object sender, DevExpress.Xpf.Grid.TreeList.TreeViewShowingEditorEventArgs e) {
        e.Cancel = e.Node.Level == 0;
    }
    

    For more information, refer to the following help topic: Edit Data.

    See Also