internal class IgnoreDataMemberContractResolver : DefaultContractResolver
    {
        protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)
        {
            JsonProperty property =  base.CreateProperty(member, memberSerialization);
            property.Ignored |= member.GetCustomAttributes(typeof(IgnoreDataMemberAttribute), true).Length > 0;
            return property;
        }
    }