JSON to C# conversion - keys like objects

Question

I read a lot of articles about JSON to C# conversion but I have one specific problem. I'm trying to convert JSON from Http response to C# object of NewsResult type with following line of code :

var newsResult = await response.Content.ReadAsAsync<NewsResult>();

This code works in most of cases and map automatically JSON data to hierarchy of C# objects, but in one case REST returns following JSON:

{
"result": {
    "1": {
        "id": 1,
        "title": "title01"            
    },
    "2": {
        "id": 2,
        "title": "title02" 
    },
    ...

Resulting C# class should look like this

public class NewsResult
{
    public ICollection<News> Result { get; set; }
}

I have trouble to map this JSON to some C# object hierarchy automatically. Do you have any idea please how to resolve this problem? I would prefer C# code that I mentioned but I would try another approach if it will be needed. One more info: I can't change REST service. Thank you.

What does NewsResult look like? Further, what does the result look like when it does work? — Mike Perrenoud
– Mike Perrenoud, Commented May 21, 2014 at 19:16
That's because it can't be mapped to an object.result can be converted to a Dictionary<string, YourType> or a dynamic — jgauffin
– jgauffin, Commented May 21, 2014 at 19:16
@Jon Skeet I don't use any JSON library. It works automatically according to this article : Calling a Web API From a .NET Client — y0j0
– y0j0, Commented May 21, 2014 at 19:19
You will have to use a custom JsonConverter which serializes/deserializes the Result[]. See the solution here that you can easily adapt to your situation: stackoverflow.com/a/17746239/325521 — Shiva
– Shiva, Commented May 21, 2014 at 19:21

L.B · Accepted Answer · 2014-05-21 19:27:37Z

2

this should work

HttpClient c = new HttpClient();
var response = await c.GetAsync(yoururl);
var newsResult = await response.Content.ReadAsAsync<NewsResult>();

public class NewsResult
{
    public Dictionary<string, Item> result { set; get; }
}

public class Item
{
    public string id { set; get; }
    public string title { set; get; }
}

answered May 21, 2014 at 19:27

L.B

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1 Comment

jgauffin Over a year ago

@YoYo: You can award LB the answer.

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