public async Task <ActionResult <DetailExportOrder> > Add(DetailExportOrder detailExportOrder)
        {
            _db.Add(detailExportOrder);
            await _db.SaveChangesAsync();

            return(CreatedAtAction("get", new { id = detailExportOrder.Id }, detailExportOrder));
        }
        public async Task <ActionResult <ExportOrder> > Add(ExportOrder exportOrder)
        {
            exportOrder.Exp_Date = DateTime.Now;
            _db.Add(exportOrder);
            await _db.SaveChangesAsync();

            return(CreatedAtAction("get", new { id = exportOrder.Id }, exportOrder));
        }