API_MEDKINECT.main.conexion_rest C# (CSharp) Метод

        public object conexion_rest(string type_request,string controller,object jsonObject,int id)
        {
            string json = JsonConvert.SerializeObject(jsonObject);
            string host = "http://localhost:3000/";
            HttpWebRequest request;

            request = (HttpWebRequest)WebRequest.Create(host + controller + ".json");
            if (type_request == "post")
            {
                request.Method = WebRequestMethods.Http.Post;
                byte[] data = Encoding.UTF8.GetBytes(json);

                request.ContentType = "application/json";
                request.Accept = "application/json";
                request.ContentLength = data.Length;
                StreamWriter postStream = new StreamWriter(request.GetRequestStream(), System.Text.Encoding.ASCII);
                postStream.Write(json);
                postStream.Close();
            }
            if (type_request == "get")
            {
                if (id != -1)
                {
                    request = (HttpWebRequest)WebRequest.Create(host + controller + "/"+id);
                }
                request.Method = WebRequestMethods.Http.Get;

            }
            if (type_request == "Put")
            {
                request = (HttpWebRequest)WebRequest.Create(host + controller + "/"+id);
                request.Method = WebRequestMethods.Http.Put;
                request.ContentType = "application/json";
                request.Accept = "application/json";
                byte[] data = Encoding.UTF8.GetBytes(json);
                request.ContentLength = data.Length;
                StreamWriter postStream = new StreamWriter(request.GetRequestStream(), System.Text.Encoding.ASCII);
                postStream.Write(json);
                postStream.Close();

            }
            NetworkCredential credentials = new NetworkCredential("username", "123");
            CredentialCache cache = new CredentialCache();
            cache.Add(new Uri(host),"Basic", credentials);
            cache.Add(new Uri(host),"Negotiate",credentials);
            request.Credentials = cache;

            HttpWebResponse  response = (HttpWebResponse)request.GetResponse();

            StreamReader sr = new StreamReader(response.GetResponseStream(),  Encoding.UTF8);
            string html = sr.ReadToEnd();

               object json_respond = JsonConvert.DeserializeObject(html);

               return json;
            //return html;
        }

 public Object loggin(string username, string password)
 {
     Object result;
     User user =new User();
     user.username = username;
     user.password = password;
     main rest = new main();
     result = rest.conexion_rest("get", "validation", user, -1);
     return result;
 }