public IActionResult Delete(int?id)
        {
            int result = 0;

            if (id == null)
            {
                return(BadRequest());
            }
            try
            {
                result = acontext.Delete(id);
                if (result == 0)
                {
                    return(NotFound());
                }
                return(Ok());
            }
            catch (Exception)
            {
                return(BadRequest());
            }
        }