Deserialize nested json objects using Json.Net returns null

Question

I am getting the following nested Json objects from an API I am calling.

{"status":"success","data":{"valid_for":3600,"token":"access_token","expires":1123123123123}}

The PostResponse class is like below

public class PostResponse
{
    public string status { get; set; }
    public Data data { get; set; }
}

public class Data
{
    public int valid_for { get; set; }
    public string token { get; set; }
    public int expires { get; set; }
}

I get null for postResponse with this code.

using (StreamReader reader = new StreamReader(resp.GetResponseStream()))
{
     Console.WriteLine(reader.ReadToEnd());
     postResponse = JsonConvert.DeserializeObject<PostResponse>(reader.ReadToEnd());
}

from your sample json: {"status":"success","data":"valid_for":3600,"token":"acces_token","expires":1123123123123}} is not a valid json, you missed { before "valid_for" — YoungLearnsToCoding
– YoungLearnsToCoding, Commented Mar 21, 2017 at 19:34
When you do a ReadToEnd don't you have to set the read pointer to the start of the stream again in order to make a new ReadToEnd, because if so when you try to parse the last ReadToEnd will return "". — dcg
– dcg, Commented Mar 21, 2017 at 19:34

Darjan Bogdan · Accepted Answer · 2017-03-21 19:40:02Z

1

You need to reset your stream pointer position, since you already read from a stream when you used WriteLine method.

Stream stream = resp.GetResponseStream();
using (StreamReader reader = new StreamReader(stream))
{
    Console.WriteLine(reader.ReadToEnd());

    stream.Position = 0; //Reset position pointer
    reader.DiscardBufferedData();

    postResponse = JsonConvert.DeserializeObject<PostResponse>(reader.ReadToEnd());
}

answered Mar 21, 2017 at 19:40

Darjan Bogdan

3,9401 gold badge24 silver badges32 bronze badges

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

Collectives™ on Stack Overflow

Deserialize nested json objects using Json.Net returns null

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related