public async Task <IActionResult> PutEtrainOrder(long id, EtrainOrder etrainOrder)
        {
            if (id != etrainOrder.EtrainOrderId)
            {
                return(BadRequest());
            }

            _context.Entry(etrainOrder).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!EtrainOrderExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }
        public async Task <ActionResult <EtrainOrder> > PostEtrainOrder(EtrainOrder etrainOrder)
        {
            _context.EtrainOrder.Add(etrainOrder);
            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateException)
            {
                if (EtrainOrderExists(etrainOrder.EtrainOrderId))
                {
                    return(Conflict());
                }
                else
                {
                    throw;
                }
            }

            return(CreatedAtAction("GetEtrainOrder", new { id = etrainOrder.EtrainOrderId }, etrainOrder));
        }