在C＃中，我如何反序列化此json？

Question

I am getting this JSON data back from a REST service that looks like this:

[ [ [ {"Name": "Joe", "Comment": "Load", "Updated": null, "Test": ""} ] ] ]

or

[ [ [ {"Name": "Joe", "Comment": "Load", "Updated": null, "Test": ""}, {"Name": "Bill", "Comment": "123", "Updated": null, "Test": ""} ] ] ]

I did a "Copy JSON as classes" feature in visual studio and it created this:

 public class Rootobject
 {
     public Project[][][] Property1 { get; set; }
 }

 public class Project
 {
   public string Name { get; set; }
   public string Comment { get; set; }
   public string Updated { get; set; }
   public string Test { get; set; }
 }

but when i try to deserialize using this code:

 var results = new JsonDeserializer().Deserialize<Rootobject>(response);

I get an error stating:

An exception of type 'System.InvalidCastException' occurred in RestSharp.dll but was not handled in user code Additional information: Unable to cast object of type 'RestSharp.JsonArray' to type 'System.Collections.Generic.IDictionary`2[System.String,System.Object]'

Could you please advise on what I might be doing wrong (NOTE: i don't have any control over how the data comes in so changing the format isn't an option)

Also, to confirm this seems to be valid JSON from JSONLlint:

Answer 1

Using Newtonsoft.Json nuget package, try

JSONConvert.DeserialiseObject<Rootobject>(response)

EDIT: BTW, I tried to use your json on http://json2csharp.com/ and it says Parsing your JSON didn't work. Please make sure it's valid. So I doubt that any json parsing library will be able to parse your JSON.

However implementing your own deserializer is possible and an ideal solution when external services return invalid JSON

I can probably help you deserialize it if you show me what JSON you get when service returns multiple Project objects.

EDIT2: Szabolcs's solutions seems promising, but I would still suggest testing it with JSON for multiple Product objects. I smell something bad & its the shitty third party service. Always good to test.

Answer 2

You can deserialize that particular JSON like this using Json.NET:

var json = "[ [ [ {\"Name\": \"Joe\", \"Comment\": \"Load\", \"Updated\": null, \"Test\": \"\"}, "+ 
                " {\"Name\": \"Bill\", \"Comment\": \"123\", \"Updated\": null, \"Test\": \"\"} ] ] ]";

var deserializedObject = JsonConvert.DeserializeObject<List<List<List<Project>>>>(json);

And to get all the Project s from the nested lists:

var allProjects = deserializedObject.SelectMany(x => x.SelectMany(y => y)).ToList();