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

        private void SessionCtrl_NodeSelected(object sender, TreeNodeActionEventArgs e)
        {
            if (e.Node != null)
            {
                MonitoredItem item = e.Node as MonitoredItem;
                if (e.Node is MonitoredItem)
                {
                    CommandBTN.Visibility = Visibility.Visible;
                    CommandBTN.Content = "Delete";
                    RemoveAllClickEventsFromButton();
                    CommandBTN.Click += ContextMenu_OnDelete;
                    CommandBTN.Tag = e.Node;
                }
                else if (e.Node is Subscription)
                {
                    CommandBTN.Visibility = Visibility.Visible;
                    CommandBTN.Content = "Cancel";
                    RemoveAllClickEventsFromButton();
                    CommandBTN.Click += ContextMenu_OnCancel;
                    CommandBTN.Tag = e.Node;
                }
                else if (e.Node is Session)
                {
                    CommandBTN.Visibility = Visibility.Visible;
                    CommandBTN.Content = "Disconnect";
                    RemoveAllClickEventsFromButton();
                    CommandBTN.Click += ContextMenu_OnDisconnect;
                    CommandBTN.Tag = e.Node;

                    // Update current session object
                    m_session = (Session)e.Node;
                }
                else
                {
                    RemoveAllClickEventsFromButton();
                    CommandBTN.Visibility = Visibility.Collapsed;
                    CommandBTN.Tag = null;
                }
            }
        }