How to deserializing JSON using JSON.NET (Getting null results) [duplicate]

Question

I am fairly new to C# / JSON and am working on a pet project to show summoner/game information from league of legends.

I am trying to get the summoner id for the requested summoner name.

Here is the JSON returned:

{"twopeas": {
   "id": 42111241,
   "name": "Twopeas",
   "profileIconId": 549,
   "revisionDate": 1404482602000,
   "summonerLevel": 30
}}

Here is my summoner class:

public class Summoner
        {

            [JsonProperty(PropertyName = "id")]
            public string ID { get; set; }

        }

Here is the rest:

    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    StreamReader reader = new StreamReader(response.GetResponseStream());

    result = reader.ReadToEnd();

    var summonerInfo = JsonConvert.DeserializeObject<Summoner>(result);

    MessageBox.Show(summonerInfo.ID);

summonerInfo.ID is null and I don't know why.

I'm sure there is something glaringly obvious that I am missing, but I'm at a loss I can't for the life of me figure it out.

Add a class Twopeas and inside it add a property twopeas it is type is a Summoner — Lamourou abdallah
– Lamourou abdallah, Commented Jul 4, 2014 at 23:37
Check out MY OWN answer for this post stackoverflow.com/questions/25142325/… I use MVC to help with this process. You will see how I call C# with AJAX, C# grabs the JSON, then I pass it back to Javascript to parse it. If you are newer to Javascript/AJAX I'd also recommend that you check out my Beginners introduction to Riot API and JSON, using Javascript and Ajax :) — Austin
– Austin, Commented Aug 6, 2014 at 14:32

Brian Rogers · Accepted Answer · 2014-07-05 00:05:40Z

2

Your ID is null because your JSON doesn't match the class you're deserializing into. In the JSON, the id property is not at the top level: it is contained within an object which is the value of a top-level property called twopeas (presumably representing the summoner name). Since this property name can vary depending on your query, you should deserialize into a Dictionary<string, Summoner> like this:

var summoners = 
           JsonConvert.DeserializeObject<Dictionary<string, Summoner>>(result);

MessageBox.Show(summoners.Values.First().ID);

edited Jul 5, 2014 at 0:05

answered Jul 4, 2014 at 23:43

Brian Rogers

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1 Comment

TomTomGo Over a year ago

This worked! Now I just need to figure out why...

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