Parsing data from json in C#

Question

I successfully got data to var content The code how I did it:

public async void FetchAsync()
{
    var client = new RestClient("http://api.locopal.com");
    var request = new RestRequest("/countries", Method.POST);
    var response = client.Execute(request);
    var content = response.Content;
    var responseCountries = JArray.Parse(JObject.Parse(content)[""].ToString());
}

But in line: var responseCountries = JArray.Parse(JObject.Parse(content)[""].ToString()); I got An unhandled exception occured. This is the data from var content:

Countries from here need to be write down to list.

What is the exception? You're passing empty string in `JObject.Parse(content)[""]` that could have been the reason? — Gururaj, Jun 04 '17 at 18:45
If you face difficulty modelling your JSON in C#, you can use http://json2csharp.com/ in future. — Nikhil Vartak, Jun 04 '17 at 18:49
Refer my answer [here](https://stackoverflow.com/a/42708158/4228458) on how to do what you want — CodingYoshi, Jun 04 '17 at 18:52

Bill · Answer 1 · 2017-06-04T18:55:53.027

3

You should deserialize the JSON into an object. You can create a POCO object with the properties from the JSON.

Example:

public class Country
{
    [JsonProperty("id")]
    public int Id { get; set; }

    [JsonProperty("nicename")]
    public string Name { get; set; }
}

Edit: Follow same casing as in JSON

edited Jun 04 '17 at 18:55

answered Jun 04 '17 at 18:44

Bill

173
1
8

Christos · Accepted Answer · 2017-06-04T21:44:05.807

3

You could declare a class like the following

public class Country
{
    [JsonProperty("id")]
    public int Id { get; set; } 

    [JsonProperty("nicename")]
    public string Name { get; set; }
}

and then deserialize the json as below:

var responseCountries = JsonConvert.DeserializeObject<IEnumerable<Country>>(content);

edited Jun 04 '17 at 21:44

answered Jun 04 '17 at 18:46

Christos

53,228
8
76
108

`var responseCountries = JsonConvert.DeserializeObject>(content);` worked for me – S. Koshelnyk Jun 04 '17 at 19:00
@S.Koshelnyk Yeap it needs `DeserializeObject`. Thanks ! – Christos Jun 04 '17 at 19:06
Looks like Newtonsoft.Json will deserialize to a Collections.Generic.List if you provide IEnumerable as a generic type argument. IMO, you should just say `DeserializeObject>` for clarity and performance. – Rikki Gibson Jun 04 '17 at 19:39

Parsing data from json in C#

2 Answers2