using System;

using System.Linq;

using System.Xml;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        string json = @"

            {

                ""Row"":{

                    """":123

                }

            }";

        XmlDocument xdoc = JsonHelper.ConvertToXml(json);

        Console.WriteLine(xdoc.OuterXml);

    }

}

​

​

public class JsonHelper

{

    public static XmlDocument ConvertToXml(string json)

    {

        JToken token = JToken.Parse(json);

        // Change "blank" to whatever you want the replacement name to be.

        ReplaceEmptyPropertyNames(token, "blank");

        return JsonConvert.DeserializeXmlNode(token.ToString());

    }

    public static void ReplaceEmptyPropertyNames(JToken token, string replaceWithName)

    {

        if (token.Type == JTokenType.Object)

        {

            foreach (JProperty prop in token.Children<JProperty>().ToList())

            {

                if (prop.Name == string.Empty)

                {

                    prop.AddAfterSelf(new JProperty(replaceWithName, prop.Value));

                    prop.Remove();

                }

                ReplaceEmptyPropertyNames(prop.Value, replaceWithName);

            }

        }

        else if (token.Type == JTokenType.Array)

        {

            foreach (JToken child in token.Children())

            {

                ReplaceEmptyPropertyNames(child, replaceWithName);

            }

        }

    }

}

​