不能从XML获取两个连接字符串(web.config)

            XmlTextReader reader = new XmlTextReader(Window1.cfg.FSAddress);
            bool[] startreading = {false , false};
            while (reader.Read())
            {
                switch (reader.NodeType)
                {
                    case XmlNodeType.Element:    // Узел является элементом.
                        if (startreading[0])
                        {
                            if (reader.Name == "add")
                                if (startreading[1])
                                {
                                    id2.Text = reader.GetAttribute(1);
                                    return;
                                }
                                else
                                {
                                    id1.Text = reader.GetAttribute(1);
                                    startreading[1] = true;
                                    startreading[0] = false;
                                }
                        }
                        else
                        if (reader.Name == "connectionStrings")
                            startreading[0] = true;
                        break;
                    case XmlNodeType.EndElement:
                        if (startreading[1])
                            if (reader.Name == "add")
                                startreading[0] = true;
                        break;
                }
            }
            XmlTextReader reader = new XmlTextR