Azure Functions – Convert Json to Xml with newtonsoft

I’m in the midst of putting together a few Azure Functions to use with Logic Apps.
This one is pretty simple, and demonstrates a couple of concepts so I thought I’d share.

{
  "bindings": [
    {
      "name": "req",
      "type": "httpTrigger",
      "direction": "in",
      "webHookType": "genericJson"
    },
    {
      "name": "res",
      "type": "http",
      "direction": "out"
    }
  ],
  "disabled": false
}

#r "Newtonsoft.Json"

using System;
using System.Net;
using System.Xml;
using Newtonsoft.Json;

public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log)
{
    log.Info($"C# HTTP trigger function processed a request. RequestUri={req.RequestUri}");

    string jsondoc = await req.Content.ReadAsStringAsync();
    
    if (jsondoc == null ) {
        return req.CreateResponse(HttpStatusCode.BadRequest, new {
            error = "Please post JsonDoc"
        });
    }
    else {
        try {
            //dynamic data = JsonConvert.DeserializeObject(jsondoc);
            //log.Info($"{data.ModuleHeader.SignOnDate}");
            
            //create root
            
            XmlDocument xDoc = JsonConvert.DeserializeXmlNode(jsondoc, "newrootnode");
            log.Info($"{xDoc.OuterXml}");
            
            
            
            return req.CreateResponse(HttpStatusCode.OK, xDoc.OuterXml);
             
        }
        catch(Exception ex){
            log.Info($"{ex.ToString()}");
                    return req.CreateResponse(HttpStatusCode.BadRequest, new {
            error = $"Error parsing jsondocument {ex.Message}"
            });
        }
    }
}

{
  "frameworks": {
    "net46": {
      "dependencies": {
        "Newtonsoft.Json": "9.0.1"
      }
    }
  }
}