public IHttpActionResult Get(int id)
        {
            try
            {
                Jam jam;
                var jamRepository = new JamRepository();

                if (id > 0)
                {
                    var jams = jamRepository.Retrieve();
                    jam = jams.FirstOrDefault(p => p.JamId == id);
                    if (jam == null)
                    {
                        return(NotFound());
                    }
                }
                else
                {
                    jam = jamRepository.Create();
                }
                return(Ok(jam));
            }
            catch (Exception ex)
            {
                return(InternalServerError(ex));
            }
        }
 public IHttpActionResult Get()
 {
     try
     {
         var jamRepository = new JamRepository();
         return(Ok(jamRepository.Retrieve().AsQueryable()));
     }
     catch (Exception ex)
     {
         return(InternalServerError(ex));
     }
 }