xml格式封装数据

xml层级关系 XDocument obj = new XDocument(new XDeclaration("1.0", "utf-8", "yes"));
                    //构造根节点
                    obj.Add(new XElement("request",
                                        new XElement("criteriaList",
                                            new XElement("criteria",
                                                new XElement("warehouseCode", warehousecode),
                                                new XElement("ownerCode", whse),
                                                new XElement("itemCode", sku.sku),
                                                new XElement("itemId", "")))));
 XmlDocument doc = new XmlDocument();                    doc.LoadXml(obj.ToString());


 var obj = new JObject
                    {
                        {"?xml",new JObject
                            {
                                {"@version","1.0" },
                                {"@encoding","utf-8"}
                            }
                        },
                        { "request", new JObject
                            {
                                {"actionType","add"},
                                {"warehouseCode", warehousecode},
                                {"ownerCode",  whse},
                                {"supplierCode", ""},
                                {"supplierName", "" },
                                { "item", j },
                                {"extendProps", new JObject
                                    {
                                        {"key1", "" },
                                        {"key2", "" },
                                        {"key3", "" },
                                        {"key4", "" },
                                        {"key5", "" }
                                    }
                                }
                            }
                        }
                    };
XmlDocument doc = (XmlDocument)JsonConvert.DeserializeXmlNode(JsonConvert.SerializeObject(obj));