C#将XML与JSON数据的互相转换

1、xml转json

string xml = "<Test><Name>Test class</Name><X>100</X><Y>200</Y></Test>";

XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
string json = Newtonsoft.Json.JsonConvert.SerializeXmlNode(doc);

Console.WriteLine("XML -> JSON: {0}", json);
Console.ReadLine();

2、json转xml

 //方法1
 XmlDocument doc1 = JsonConvert.DeserializeXmlNode(json);
 Console.WriteLine(doc1.OuterXml);

 //方法2
 //json字符串需要把键加"才行  如：{Name:"aaa",Value:1}  这里Name和Value是键这样写法转换的时候报错  需要写成  {"Name":"aaa","Value":1}  
 XmlDictionaryReader reader = JsonReaderWriterFactory.CreateJsonReader(Encoding.UTF8.GetBytes(json), XmlDictionaryReaderQuotas.Max);
 XmlDocument doc2 = new XmlDocument();
 doc2.Load(reader);  

        //方法3
        /// <summary>  
        /// json字符串转换为Xml对象  
        /// </summary>  
        /// <param name="sJson"></param>  
        /// <returns></returns>  
        public static XmlDocument Json2Xml(string sJson)
        {
            JavaScriptSerializer oSerializer = new JavaScriptSerializer();
            Dictionary<string, object> Dic = (Dictionary<string, object>)oSerializer.DeserializeObject(sJson);
            XmlDocument doc = new XmlDocument();
            XmlDeclaration xmlDec;
            xmlDec = doc.CreateXmlDeclaration("1.0", "gb2312", "yes");
            doc.InsertBefore(xmlDec, doc.DocumentElement);
            XmlElement nRoot = doc.CreateElement("root");
            doc.AppendChild(nRoot);
            foreach (KeyValuePair<string, object> item in Dic)
            {
                XmlElement element = doc.CreateElement(item.Key);
                KeyValue2Xml(element, item);
                nRoot.AppendChild(element);
            }
            return doc;
        }

        private static void KeyValue2Xml(XmlElement node, KeyValuePair<string, object> Source)
        {
            object kValue = Source.Value;
            if (kValue.GetType() == typeof(Dictionary<string, object>))
            {
                foreach (KeyValuePair<string, object> item in kValue as Dictionary<string, object>)
                {
                    XmlElement element = node.OwnerDocument.CreateElement(item.Key);
                    KeyValue2Xml(element, item);
                    node.AppendChild(element);
                }
            }
            else if (kValue.GetType() == typeof(object[]))
            {
                object[] o = kValue as object[];
                for (int i = 0; i < o.Length; i++)
                {
                    XmlElement xitem = node.OwnerDocument.CreateElement("Item");
                    KeyValuePair<string, object> item = new KeyValuePair<string, object>("Item", o[i]);
                    KeyValue2Xml(xitem, item);
                    node.AppendChild(xitem);
                }

            }
            else
            {
                XmlText text = node.OwnerDocument.CreateTextNode(kValue.ToString());
                node.AppendChild(text);
            }
        }