private void _treeCtrl_AfterLabelEdit(object sender, NodeLabelEditEventArgs e) { if (string.IsNullOrEmpty(e.Label)) { // user cancel the edit, stop editing e.CancelEdit = true; } else { BindingTreeNode node = e.Node as BindingTreeNode; if (node != null) { node.AfterLabelEdit(e.Label); } } }