Json objects to CSV file c#

I want to write my JSON objects into a csv file in c# I'm using a web api from a windows 8.1 client, I tried this tutorial but "DeserializeXmlNode" seems to be missing, and XmlNode too! http://www.codeproject.com/Tips/565920/Create-CSV-from-JSON-in-Csharp

here's the code i use to get the api response:

protected override async void OnNavigatedTo(NavigationEventArgs e)          
{
        var server = "http://localhost:1504/api";
        var service = System.IO.Path.Combine(server, "PlayerStats");
        var playerstat = await GetAsync<IEnumerable<Common.Models.PlayerStat>>(new Uri(service));  

    }

    public async System.Threading.Tasks.Task<T> GetAsync<T>(Uri uri)
    {
        using (var http = new Windows.Web.Http.HttpClient())
        {
            http.DefaultRequestHeaders.Add("Accept", "application/json");
            var response = await http.GetAsync(uri);
            if (response.StatusCode != Windows.Web.Http.HttpStatusCode.Ok)
            {
                throw new Exception(response.StatusCode.ToString());
            }
            string json = await response.Content.ReadAsStringAsync();
            return Newtonsoft.Json.JsonConvert.DeserializeObject<T>(json);
        }
    }
}

I'm using System.XML and Newtonsoft.Json but why do I keem missing references, and is there a way to write my objects directy to a csv?