public string GetCompetitionsByCarId(Int16 carid)
        {
            try {
                DBController dbc = new DBController();
                List<Competition> carCompetitions = dbc.GetCompetitionByCarId(carid);
                dbc.Close();

                return JsonConvert.SerializeObject(carCompetitions);
            } catch (Exception e) {
                Console.WriteLine(e.ToString());
                DBController dbc = new DBController();
                dbc.AddLog("GetCompetitionsByCarId?carid={carid}", carid, null, null, e.ToString().Substring(0, Math.Min(e.ToString().Count(), 254)), "");
                dbc.Close();
            }

            return "";
        }