JSON.NET DeserializeObject from array by order to a list

Question

I am trying to Deserialize a Json Object into Dynamic List by order, so I have:

Json:

   string json = "{'elements':[
                     {'EntityA':[
                               {'name ':'Jhon'}
                               ],
                      'EntityB':[
                               {'title' : 'car'}
                               ],
                      'EntityB':[
                               {'title':'aaa'}
                               ],
                      'EntityA':[
                               {'name' : 'Alice'}
                               ]]}";

.NET Classes Base Classes:

public interface EntitysInterface{}

public class EntityA: EntitysInterface
{
   public string name { get; set; }
}

public class EntityB: EntitysInterface
{
   public string title { get; set; }
}

public class Entitys
{
    public List<EntitysInterface> elements { get; set; } //EntityA, EntityB,...

    public Entitys() 
    {
    }
}

My DeserializeObject Dificult:

Entitys listFinaly = JsonConvert.DeserializeObject<Entitys>(json); 

Exception "Type is an interface or abstract class and cannot be instantiated. :( "

Answer 1

The JSON.NET deserializer is telling you that it can't figure out which EntitysInterface object that you would like selected. It requires that you give it a hint.

ContractResolver helps to give that hint.

This post answers a similar question.

EDIT:

There is a good example in the JSON.Net documentation.