//生成XML

            XmlDocument xmlDoc = new XmlDocument();

            XmlElement root = xmlDoc.CreateElement("Data");

            xmlDoc.AppendChild(root);

            foreach (var item in agentStateDic)

            {

                XmlElement element = xmlDoc.CreateElement("Agent");

                element.SetAttribute("Code", item.Key);

                element.SetAttribute("Status", item.Value);

                root.AppendChild(element);

            }

            rtn = xmlDoc.InnerXml;