Opc.Ua.SampleClient.ClientPage.BrowseCTRL_NodeSelected C# (CSharp) Method

        private void BrowseCTRL_NodeSelected(object sender, TreeNodeActionEventArgs e)
        {
            if (e.Node != null)
            {
                ReferenceDescription reference = e.Node as ReferenceDescription;
                if (reference != null && reference.NodeClass == NodeClass.Variable)
                {
                    CommandBTN.Visibility = Visibility.Visible;
                    CommandBTN.Content = "Report";
                    RemoveAllClickEventsFromButton();
                    CommandBTN.Click += ContextMenu_OnReport;
                    CommandBTN.Tag = e.Node;
                }
                else
                {
                    RemoveAllClickEventsFromButton();
                    CommandBTN.Visibility = Visibility.Collapsed;
                    CommandBTN.Tag = null;
                }
            }
        }