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; }
}

• McAden: But what is communication at runtime?
• Aviran Cohen: Have another look in my question, I've wrote its runtime value.

Answer 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.

Answer 2

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);

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