Json.NET: Deserializing Nested Json

Question

How do I deserialize the "Items" class part on this Json string:

{
"Buddies": {
    "count": 1,
    "items": [
        {
            "id": "5099207ee4b0cfbb6a2bd4ec",
            "firstName": "Foo",
            "lastName": "Bar",
            "image": {
                  "url": "",
                    "sizes": [
                        60,
                        120,
                        180,
                        240,
                        360
                    ],
                    "name": "myphoto.png"
                }
            }
        ]
    }
}

The original class that I have is :

public class Buddy 
{
   public IEnumerable<Item> Items { get; set; }
   public class Item {
       public string Id { get; set; }
       public string FirstName { get; set; }
       public string LastName { get; set; }
   }
}

But the upper part of json is pretty useless to me and I want to use this class instead:

public class Buddy 
{
       public string Id { get; set; }
       public string FirstName { get; set; }
       public string LastName { get; set; }       
}

Zac Charles · Accepted Answer · 2016-08-06 21:10:46Z

9

Here's an approach using JSONPath, assuming your JSON is in a variable named json:

var buddies = JObject.Parse(json).SelectToken("$.Buddies.items").ToObject<Buddy[]>();

answered Aug 6, 2016 at 21:10

Zac Charles

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Comments

jwaliszko · Accepted Answer · 2012-11-25 13:06:47Z

4

I'm not aware of out of the box solution if any, but what stops you from writing few lines of code similar to shown below, in order to build the new collection:

var obj = JsonConvert.DeserializeObject<dynamic>(jsonstring);
var items = new List<Buddy>();
foreach (var x in obj.Buddies.items)
{
    items.Add(new Buddy
                  {
                      Id = x.id,
                      FirstName = x.firstName,
                      LastName = x.lastName
                  });
}

answered Nov 25, 2012 at 13:06

jwaliszko

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1 Comment

keyr Over a year ago

I like this approach, but wouldn't this be neet to put this in the Custom Converter logic?

keyr · Accepted Answer · 2012-11-27 04:52:12Z

0

Create a JsonConverter in which one can loop through the property and its value and create the desired object. For more informaiton see search in stackoverflow for JsonConverter e.g. http://stackoverflow.com/questions/2315570/json-net-how-to-serialize-a-class-using-custom-resolver. I also liked the approach of Jaroslaw

edited Nov 27, 2012 at 4:52

answered Nov 27, 2012 at 4:38

keyr

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Comments

Community · Accepted Answer · 2017-05-23 12:08:38Z

0

You can use this code:

dynamic dictionary = 
(JsonConvert.DeserializeObject <IDictionary<string, object> > (jsonstring) )["Buddies"];

            var response = dictionary.items;

            foreach (var item in response)
            {

                var firstName= item.firstName;

            }

you can also see: Parsing a complex JSON result with C#

edited May 23, 2017 at 12:08

CommunityBot

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answered Apr 14, 2014 at 5:11

jila_milani

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