С# Проблема с преобразованием из json

Я хочу получать сообщения с тестового сайта с WordPress. Когда я отлаживаю, я вижу, что получаю данные из Интернета, но когда я пытаюсь поместить их в TextBox, они, кажется, не существуют. Я использовал веб-сайт для создания классов из С#, но я думаю, что проблема в моем коде. Я вызываю метод следующим образом:

RootObject myPosts = await Class1.Get();

Затем, чтобы показать значения пользователю, я делаю:

textBox1.Text = myPosts.id + " - " + myPosts.author+ "-" + myPosts.title;

Код:

public class Class1
{
    public async static Task<RootObject> Get()
    {
         var http = new HttpClient();
        var response = await http.GetAsync("http://bearlike-attackers.000webhostapp.com/wp-json/wp/v2/posts?search=TEST");
        var result = await response.Content.ReadAsStringAsync();
        var serializer = new DataContractJsonSerializer(typeof(RootObject));

        var ms = new MemoryStream(Encoding.UTF8.GetBytes(result));
        var data = (RootObject)serializer.ReadObject(ms);
        return data;
    }
}
    [DataContract]
    public class Guid
    {
        [DataMember]
        public string rendered { get; set; }
    }
    [DataContract]
    public class Title
    {
        [DataMember]
        public string title { get; set; }
    }
    [DataContract]
    public class Content
    {
        [DataMember]
        public string rendered { get; set; }

        [DataMember]
        public bool @protected { get; set; }
    }
    [DataContract]
    public class Excerpt
    {
        [DataMember]
        public string rendered { get; set; }

        [DataMember]
        public bool @protected { get; set; }
    }
    [DataContract]
    public class Self
    {
        [DataMember]
        public string href { get; set; }
    }
    [DataContract]
    public class Collection
    {
        [DataMember]
        public string href { get; set; }
    }
    [DataContract]
    public class About
    {
        [DataMember]
        public string href { get; set; }
    }
    [DataContract]
    public class Author
    {
        [DataMember]
        public bool embeddable { get; set; }

        [DataMember]
        public string href { get; set; }
    }
    [DataContract]
    public class Reply
    {
        [DataMember]
        public bool embeddable { get; set; }

        [DataMember]
        public string href { get; set; }
    }
    [DataContract]
    public class VersionHistory
    {
        [DataMember]
        public string href { get; set; }
    }
    [DataContract]
    public class WpAttachment
    {
        [DataMember]
        public string href { get; set; }
    }
    [DataContract]
    public class WpTerm
    {
        [DataMember]
        public string taxonomy { get; set; }

        [DataMember]
        public bool embeddable { get; set; }

        [DataMember]
        public string href { get; set; }
    }
    [DataContract]
    public class Cury
    {
        [DataMember]
        public string name { get; set; }

        [DataMember]
        public string href { get; set; }

        [DataMember]
        public bool templated { get; set; }
    }
    /*
    public class Links
    {
        public List<Self> self { get; set; }
        public List<Collection> collection { get; set; }
        public List<About> about { get; set; }
        public List<Author> author { get; set; }
        public List<Reply> replies { get; set; }
        public List<VersionHistory> __invalid_name__version-history { get; set; }
    public List<WpAttachment> __invalid_name__wp:attachment { get; set; }
public List<WpTerm> __invalid_name__wp:term { get; set; }
    public List<Cury> curies { get; set; }
}
*/
    [DataContract]
    public class RootObject
    {
        [DataMember]
        public string date { get; set; }

        [DataMember]
        public int id { get; set; }

        [DataMember]
        public string date_gmt { get; set; }

        [DataMember]
        public Guid guid { get; set; }

        [DataMember]
        public string modified { get; set; }

        [DataMember]
        public string modified_gmt { get; set; }

        [DataMember]
        public string slug { get; set; }

        [DataMember]
        public string type { get; set; }

        [DataMember]
        public string link { get; set; }

        [DataMember]
        public Title title { get; set; }

        [DataMember]
        public Content content { get; set; }

        [DataMember]
        public Excerpt excerpt { get; set; }

        [DataMember]
        public int author { get; set; }

        [DataMember]
        public int featured_media { get; set; }

        [DataMember]
        public string comment_status { get; set; }

        [DataMember]
        public string ping_status { get; set; }

        [DataMember]
        public bool sticky { get; set; }

        [DataMember]
        public string template { get; set; }

        [DataMember]
        public string format { get; set; }
        /*
            [DataMember]
            public List<object> meta { get; set; }

            [DataMember]
            public List<int> categories { get; set; }

            [DataMember]
            public List<object> tags { get; set; }


            [DataMember]
           public Links _links { get; set; }
           */
    }

}