Deserialize json to object json.net

Question

I'm having troubles to desirialize a JSON string to n object using JSON.net

I've tried the following but results are always null :

class auctionList
{
    public auctionInfo auctionInfo { get; set; }
}

class auctionInfo
{
    public IList<auction> auctions { get; set; }
}

class auction
{
    public string tradeId { get; set; }
}

Here is the json string :

{
"auctionInfo": [
    {
        "tradeId": 276649263881
    },
    {
        "tradeId": 356444585498
    },
    .......
    ]
  }


auctionList auctions = JsonConvert.DeserializeObject<auctionList>(json);

auctions

is always null.

and is DeserializeObject the fastest way to do it if I just wanna reach 'tradeId' ?

Any ideas ? Thanks.

Your json doesn’t match your class structure. auctioninfo is an object in your class whereas in your json it is an array. — weichch
– weichch, Commented Apr 10, 2020 at 12:10
Try the reverse: In code, make an auctionList, populated with your data (shown above) and serialize it to json. Compare it to your incoming data. — tgolisch
– tgolisch, Commented Apr 10, 2020 at 12:25
@tgolisch thanks for the advice ! Will do it next time i'm working with json ! — Cesar
– Cesar, Commented Apr 10, 2020 at 12:27

D. Dahlberg · Accepted Answer · 2020-04-10 12:23:30Z

1

You need modify your string to:

{
"auctionInfo": { "auctions":
    [
    {
        "tradeId": 276649263881
    },
    {
        "tradeId": 356444585498
    }
    ]
    }
  }

or set your classes to:

public class auction
{
    public Auctioninfo[] auctionInfo { get; set; }
}

public class Auctioninfo
{
    public string tradeId { get; set; }
}

edited Apr 10, 2020 at 12:23

D. Dahlberg

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answered Apr 10, 2020 at 12:16

Vadim Bondaruk

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