public class MyCustomContractResolver : DefaultContractResolver
{


    protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)
    {
        JsonProperty property = base.CreateProperty(member, memberSerialization);
        property.ShouldSerialize = (instance => containsSomeValues(instance.GetType()
                                                .GetProperty(member.Name)
                                                .GetValue(instance, null)));

        return property;
    }
    private bool containsSomeValues(object p)
    {
        if (p == null)
        {
            return false;
        }

        if (p.GetType() == typeof(DateTime))
        {
            return true;
        }

        if (p.GetType() == typeof(string))
        {
            if (String.IsNullOrEmpty(p.ToString()))
            {
                return false;
            }

            else
            {
                return true;
            }
        }

        /*
         *  This block skips serialization of the empty list and lists with empty objects;
         *  I'd like to serialize both of those as the empty array so it's commented out.
         *
        if (typeof(IEnumerable).IsAssignableFrom(p.GetType()))
        {
            bool containsValues = false;
            foreach (object o in (IEnumerable)p)
            {
                if (containsSomeValues(o))
                {
                    containsValues = true;
                }

            }
            return containsValues;

        }
        */

        if (p.GetType().GetProperties().Count() > 0)
        {
            foreach (PropertyInfo pi in p.GetType().GetProperties())
            {
                if (containsSomeValues(pi.GetValue(p, null)))
                {
                    return true;
                }
            }
            return false;
        }

        return true;
    }
}