using System;

using System.Linq;

using System.Reflection;

using Newtonsoft.Json;

using Newtonsoft.Json.Serialization;

public class Program

{

    public static void Main()

    {

        var myClass = new MyClass

        {

            SomeName = "apple",

            SomeValue = "delicious",

            AnotherName = "pineapple",

            AnotherValue = "not as delicious as the apple"

        };

​

        var settings = new JsonSerializerSettings

        {

            ContractResolver = new CustomResolver(),

            Formatting = Formatting.Indented

        };

​

        var json = JsonConvert.SerializeObject(myClass, settings);

        Console.WriteLine(json);

​

    }

}

​

public class MyClass

{

    [MyCustomProperty("name")]

    public string SomeName { get; set; }

​

    [MyCustomProperty("value")]

    public string SomeValue { get; set; }

​

    public string AnotherName { get; set; }

​

    public string AnotherValue { get; set; }

}

​

[AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = true)]

public class MyCustomPropertyAttribute : Attribute

{

    public string PropertyName { get; set; }

    public MyCustomPropertyAttribute(string propertyName)

    {

        PropertyName = propertyName;

    }

}

​

public class CustomResolver : DefaultContractResolver

{

    protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)

    {

        JsonProperty property = base.CreateProperty(member, memberSerialization);

        MyCustomPropertyAttribute customAttribute = (MyCustomPropertyAttribute)property.AttributeProvider.GetAttributes(typeof(MyCustomPropertyAttribute), true).FirstOrDefault();

        if (customAttribute != null)

        {

            property.PropertyName = customAttribute.PropertyName;

        }

        else

        {

            property.Ignored = true;

        }

        return property;

    }

}

​

​