CODEWITHSUNDEEP
c#jsonserializationjson.netrestsharp
user3337833
user3337833

Reputation: 23

Deserialize JSON String Nested Dictionary

I am trying to use Riot games REST API to make a webapp in C#. I am fine with making the requests using RESTSharp but am having some problems using JSON.Net to convert the returned Json to an object. My request returns a JSON string for example:

{\"dyrus\":{\"id\":4136713,\"name\":\"Dyrus\",\"profileIconId\":23,\"summonerLevel\":1,\"revisionDate\":1376908220000}}

I want to deserialize this into an object that has attributes: id, name, profileIconID, summonerLevel and revisionDate.

The problem I am having is that the information is being deserialized as a string because the Dictionary is nested. What is the best way to just retrieve the nested Dictionary portion of the string: {\"id\":4136713,\"name\":\"Dyrus\",\"profileIconId\":23,\"summonerLevel\":1,\"revisionDate\":1376908220000} and convert it into an object?

Thanks for your help!

Edit:

Here is what I have tried:

public class LeagueUser
{
    public LeagueUser(string json)
    {
        JavaScriptSerializer serializer = new JavaScriptSerializer();
        string jsonString = (string)serializer.DeserializeObject(json);
        LeagueUser test = (LeagueUser)serializer.DeserializeObject(jsonString);
    }
    public int id { get; set; }
    public string name { get; set; }
    public long revisionDate { get; set; }
}

Upvotes: 2

Views: 4723

Answers (2)

Ilija Dimov
Ilija Dimov

Reputation: 5299

You can achieve what you want by creating custom converter for your LeagueUser class:

public class LeagueUserConverter : JsonConverter
{

    public override bool CanConvert(Type objectType)
    {
        return typeof(LeagueUser) == objectType;
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        if (!CanConvert(objectType)) return null;

        var jObject = JObject.Load(reader);

        var user = new LeagueUser
            {
                Id = Convert.ToInt64(jObject["dyrus"]["id"]),
                Name = jObject["dyrus"]["name"].ToString(),
                ProfileIconId = Convert.ToInt32(jObject["dyrus"]["profileIconId"]),
                SummonerLevel = Convert.ToInt32(jObject["dyrus"]["summonerLevel"]),
                RevisionDate = Convert.ToInt64(jObject["dyrus"]["revisionDate"])
            };

        return user;
    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        throw new NotImplementedException();
    }
}

Next you need to decorate your class with the defined converter:

[JsonConverter(typeof(LeagueUserConverter))]
public class LeagueUser
{
    public long Id { get; set; }

    public string Name { get; set; }

    public int ProfileIconId { get; set; }

    public int SummonerLevel { get; set; }

    public long RevisionDate { get; set; }
}

And wherever you need call DeserializeObject method:

var user = JsonConvert.DeserializeObject<LeagueUser>(json);

where the json variable is the json string you posted in your question.

Upvotes: 1

ekad
ekad

Reputation: 14614

You don't need the constructor, change LeagueUser class to this

public class LeagueUser
{
    public int id { get; set; }
    public string name { get; set; }
    public long revisionDate { get; set; }
}

and use Json.NET to deserialize the json into a Dictionary<string, LeagueUser>

string jsonStr = "{\"dyrus\":{\"id\":4136713,\"name\":\"Dyrus\",\"profileIconId\":23,\"summonerLevel\":1,\"revisionDate\":1376908220000}}";

var deserializedObject = JsonConvert.DeserializeObject<Dictionary<string, LeagueUser>>(jsonStr);

You can get the LeagueUser object this way

LeagueUser leagueUser = deserializedObject["dyrus"];

Upvotes: 1

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