Remove null properties of an object sent to Json MVC

Question

namespace Booking.Areas.Golfy.Models
{
    public class Time
    {
        public string   time            { get; set; }
            


        

Answer 1

The answers given are interresting, but I had started using DataContractJsonSerializer in the meantime.
And it does the job fine without the need of using a third party framework (though JSON.Net does seem like widely used).

public ActionResult Index(
    string date
    , int? courseid = null
    , int? clubid = null
    , int? holes = null
    , int? available = null
    , int? prices = null
)
{
    var DateFrom = DateTime.ParseExact(date, "yyyy-MM-dd", CultureInfo.InvariantCulture);

    MTeetimes r = BookingManager.GetBookings(new Code.Classes.Params.ParamGetBooking()
    {
        ClubID = clubid
        , DateFrom = DateFrom
        , DateTo = DateFrom.AddDays(1)
        , GroundID = courseid
    });

    // return Json(r, JsonRequestBehavior.AllowGet);

    string response;
    var serializer = new DataContractJsonSerializer(typeof(MTeetimes));

    // Serialize
    using (var ms = new MemoryStream())
    {
        serializer.WriteObject(ms, r);
        response = Encoding.Default.GetString(ms.ToArray());
    }

    return Content(response);
}

[DataContract]
public class Time
{
    [DataMember(Name="time", EmitDefaultValue = false)]
    public string Time
    {
        get;
        set;
    }

    [DataMember(Name = "holes", EmitDefaultValue = false)]
    public int Holes
    {
        get;
        set;
    }

    [DataMember(Name = "slots_available", EmitDefaultValue = false)]
    public int Slots_available
    {
        get;
        set;
    }

    [DataMember(Name = "price", EmitDefaultValue = false)]
    public decimal? Price
    {
        get;
        set;
    }

    [DataMember(Name = "nextcourseid", EmitDefaultValue = false)]
    public int? Nextcourseid
    {
        get;
        set;
    }

    [DataMember(Name = "allow_extra", EmitDefaultValue = false)]
    public bool? Allow_extra
    {
        get;
        set;
    }
}