I have a class like this:

public class media
{
    public string id { get; set; }
    public string code { get; set; }
    public string url { get; set; }
    public string comment_count { get; set; }
    public string like_count { get; set; }

    public int no { get; set; }
}

I create a list

List<media> my_stack = new List<media>();

I added some media in my list;

media new_media = new media();

new_media.id = "some id";
new_media.code = "value";
new_media.url = "value";

my_stack.Add(new_media);

new_media = new media();

new_media.id = "some id";
new_media.url = "value";

my_stack.Add(new_media);

new_media = new media();

new_media.id = "some id";
new_media.url = "value";
new_media.code = "value";
new_media.comment_count = "value";
new_media.like_count = "value";

my_stack.Add(new_media);

When I SerializeObject List<media> media result is full of null properties.

[
{"id":"some id", "code":"value", "url":"value","comment_count":null, "like_count": null, "no":0},
{"id":"some id", "code":null, "url":"value","comment_count":null, "like_count": null, "no":0},
{"id":"some id", "code":"value", "url":"value","comment_count":"value", "like_count": "value", "no":0}
]

I don't want to null values. I tried two things about NullValueHandling but not working for me.

1 : How to ignore a property in class if null, using json.net

2 : http://www.tecsupra.com/serializing-only-some-properties-of-an-object-to-json-using-newtonsoft-json-net/

I think NullValueHandling not working on List<object> Serializing?

How i can remove null values in my List json?