How to parse nested JSON string using .NET

Question

I'm trying to parse a nested JSON string returned from the GCM (Google Could Messaging) server using VB.NET. The JSON string looks like this:

{ "multicast_id": 216,
 "success": 3,
 "failure": 3,
 "canonical_ids": 1,
 "results": [
 { "message_id": "1:0408" },
 { "error": "Unavailable" },
 { "error": "InvalidRegistration" },
 { "message_id": "1:1516" },
 { "message_id": "1:2342", "registration_id": "32" },
 { "error": "NotRegistered"}
 ]
}

I would like to get the results array in the above string.

I found the following example helpful, example but it does not show how to get to the nested parts, specifically message_id, error and registration_id inside the results array.

Thanks

Answer 1

I'll give an answer using c# and Json.net

var jobj = JsonConvert.DeserializeObject<Response>(json);

You can also use JavaScriptSerializer

var jobj2 = new JavaScriptSerializer().Deserialize<Response>(json);

---

public class Result
{
 public string message_id { get; set; }
 public string error { get; set; }
 public string registration_id { get; set; }
}
public class Response
{
 public int multicast_id { get; set; }
 public int success { get; set; }
 public int failure { get; set; }
 public int canonical_ids { get; set; }
 public List<Result> results { get; set; }
}

• Netricity: @KashifB use Telerik's Code Converter to translate the C# to VB.NET
• katit: Multicast Id and others should be long - int is too small for what google sends back