How to JSON deserialize child objects ASP.NET Core

Question

I'm trying to deserialize a JSON API response but not sure how I can access properties of a child object.

This is an example of the API response I am working with:

{
    "token_type": "Bearer",
    "expires_at": 1598830199,
    "expires_in": 21408,
    "refresh_token": "*Removed*",
    "access_token": "*Removed*",
    "athlete": {
        "id": *Removed*,
        "username": null,
        "resource_state": 2,
        "firstname": "Jon",
        "lastname": "Clyde",
        "city": "*Removed*",
        "state": "England",
        "country": "United Kingdom",
        "sex": "M",
        "premium": true,
        "summit": true,
        "created_at": "*Removed*",
        "updated_at": "*Removed*",
        "badge_type_id": 1,
        "profile_medium": "avatar/athlete/medium.png",
        "profile": "avatar/athlete/large.png",
        "friend": null,
        "follower": null
    }
}

I have managed to access the root properties I need by creating a class with properties expires_at, expires_in, access_token, refresh_token and then using the following lines of code:

using var responseStream = await response.Content.ReadAsStreamAsync();
var stravaResponse = await JsonSerializer.DeserializeAsync<Authorisation>(responseStream);

However, I need to access the id, username, firstname and lastname that come under the child object of "athelete".

Is there a good recommended way of achieving this?

Noah Stahl · Accepted Answer · 2020-08-30 20:13:19Z

1

Just add another class representing the model for athlete, then make this a property of your top-level class:

public class Authorisation
{
    // Root properties
        
    // Nested athlete object
    public Athlete Athlete { get; set; }
}

public class Athlete
{
    public string Id { get; set; }

    public string Username { get; set; }

    // Other properties
}

You can then access the values as usual in C#:

var athleteId = stravaResponse.Athlete.Id;

answered Aug 30, 2020 at 20:13

Noah Stahl

7,7235 gold badges30 silver badges42 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

DaveEP · Accepted Answer · 2020-08-30 21:09:37Z

0

Just to add to what Noah has added, if you are using Visual Studio (not sure about VS Code) you can use:

Edit >> Paste Special >> Paste JSON as Classes

in the menu and it will create the classes required to be able to deserialise any (valid) JSON you paste. Once you have this you can deserialise using that class and access it's members like any other class.

answered Aug 30, 2020 at 21:09

DaveEP

1,5064 gold badges16 silver badges28 bronze badges

1 Comment

Jon Clyde Over a year ago

Thanks for the advice, I'll give that a try

Collectives™ on Stack Overflow

How to JSON deserialize child objects ASP.NET Core

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related