获取XML中的值

在一个项目中，厂商返回的接口信息是这样的：

                <? xml version = "1.0" encoding = "utf-8" ?>
                 < response >
                 < message > Successfully created stockout order information </ message >
                 < deliveryOrderId > CKDD0205200326000002 </ deliveryOrderId >
                  < createTime > 2020 - 03 - 26 09:04:34 </ createTime >
                 < flag > success </ flag >
                 < code > 201 </ code >
                </ response >

URL

XDocument xdoc = XDocument.Load(new StringReader(rr));
XElement root = xdoc.Elements().First();

string message = root.Element("message").Value;
string code = root.Element("code").Value;
string flag = root.Element("flag").Value;
string createTime = root.Element("createTime").Value;
string deliveryOrderId = root.Element("deliveryOrderId").Value;

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方法二：

                 XmlDocument doc = new XmlDocument();
                doc.InnerXml = rr;//rr是厂商返回的接口信息 直接加载到XMLDOcument中


                string flag = doc.SelectSingleNode("response/flag").InnerXml;
                string code = doc.SelectSingleNode("response/code").InnerText;


                XmlNode xddoc = doc.SelectSingleNode("response/items");
                string items = xddoc.InnerXml;