public ActionResult <ResultModel <int> > Update([FromRoute] string id, [FromForm] List <Strategy> strategies = null) { var rs = new ResultModel <int>(); if (strategies == null || strategies.Count == 0) { strategies = new(); strategies.Add(new Strategy()); } try { rs.Data = _service.UpdateStrategies(id, strategies); } catch (Exception ex) { rs.Code = ex.HResult; rs.Message = ex.ToString(); } return(rs); }