// POST api/SelectListEF
        public HttpResponseMessage Post(WebApiParams param)
        {
            // B層呼出し+都度コミット
            LayerB layerB = new LayerB();

            layerB.SelectAll_List(param);

            // 結果(正常系)
            List <Shipper> shipperData = new List <Shipper>();

            shipperData = (List <Shipper>)param.Obj;
            return(Request.CreateResponse(HttpStatusCode.OK, shipperData));
        }