Dynamic to Custom C# Object

Question

I am trying to convert dynamic object contains JSON data into custom c# object and get the following error:

RuntimeBinderException The best overloaded method match for Newtonsoft.Json.JsonConvert.DeserializeObject(string, System.Type, params Newtonsoft.Json.JsonConverter[])' has some invalid arguments

The variable named communication is a dynamic object contains the following value (JSON data):

{
  "name": "inGame",
  "selected": true,
  "image": "assets/img/communication/ingame.png"
}

here is the code that should convert the dynamic into a custom c# object:

InGameCommunication  inherited = JsonConvert.DeserializeObject(communication, typeof(InGameCommunication),
                                                          new JsonSerializerSettings());

The class hierarchy:

public abstract class Communication
{
    public int Id { get; set; }
    public string Name { get; set; }
    public bool Selected { get; set; }
}

public class InGameCommunication : Communication
    {
    }

public class SkypeCommunication : Communication
{
    public string Username { get; set; }
}

Have another look in my question, I've wrote its runtime value. — Aviran Cohen
– Aviran Cohen, Commented Oct 4, 2013 at 22:11

McAden · Accepted Answer · 2013-10-04 22:19:07Z

1

You've stated that communication is a dynamic object. However, that does not absolve you of type-safety. At run-time communication still needs to be a string (As stated in the error message).

You're bypassing compiler error by making the variable dynamic but at run-time if the variable isn't a string or of a conversion that can be inferred it will still throw.

See the msdn reference, specifically the heading on overload resolution.

answered Oct 4, 2013 at 22:19

McAden

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Comments

JLe · Accepted Answer · 2013-10-04 21:29:55Z

0

That code looks like it should work. Can you show how you declared the variable Type?

It should be something like

var type = typeof(InGameCommunication);

answered Oct 4, 2013 at 21:29

JLe

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1 Comment

Aviran Cohen Over a year ago

Yes, its the same way I've declared my type variable. I've updated my post with this value.

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