using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using System.Xml;

public class Program

{

    public static void Main()

    {

            var xml = @"<Items xmlns:json='http://james.newtonking.com/projects/json' >

                         <Item json:Array='true'>

                            <Name>name</Name>

                             <Detail>detail</Detail>    

                        </Item>

                        </Items>";

​

            XmlDocument xmldocument = new XmlDocument();

            xmldocument.LoadXml(xml);

​

​

            var json = JsonConvert.SerializeXmlNode(xmldocument);

            Console.WriteLine(json);

        //Output : {"Items":{"Item":[{"Name":"name","Detail":"detail"}]}}

    }

}

​

​