using System;

using System.Collections.Generic;

using System.Dynamic;

using System.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json;

​

public class Program

{

    public static void Main()

    {

        const string JSON = @"{'Name': 'my first story', 'ToldByUserId': 255 }";

        var stroy = JsonConvert.DeserializeObject<EntityBase>(JSON, new StoryCreator());

​

    }

}

​

// this is not the actual type but a mock to test the behavior with

public class EntityBase : DynamicObject

{

    public string EntityName { get; private set; }

    private readonly Dictionary<string, object> values = new Dictionary<string, object>();

    public EntityBase(string entityName)

    {

        this.EntityName = entityName;

    }

    public virtual object this[string fieldname]

    {

        get

        {

            if (this.values.ContainsKey(fieldname))

                return this.values[fieldname];

            return null;

        }

        set

        {

            if (this.values.ContainsKey(fieldname))

                this.values[fieldname] = value;

            else

                this.values.Add(fieldname, value);

        }

    }

    public override IEnumerable<string> GetDynamicMemberNames()

    {

        return this.values.Keys.ToList();

    }

    // If you try to get a value of a property

    // not defined in the class, this method is called.

    public override bool TryGetMember(GetMemberBinder binder, out object result)

    {

        result = this[binder.Name];

        return true;

    }

    // If you try to set a value of a property that is

    // not defined in the class, this method is called.

    public override bool TrySetMember(SetMemberBinder binder, object value)

    {

        this[binder.Name] = value;

        return true;

    }

}

​

public class StoryCreator : CustomCreationConverter<EntityBase>

{

    public override EntityBase Create(Type objectType)

    {

        return new EntityBase("Stroy");

    }

}

​

​