public async Task <ActionResult <ShareServiceModel> > PostShareServiceModel(ShareServiceModel shareServiceModel)
        {
            _context.ShareServiceModel.Add(shareServiceModel);
            await _context.SaveChangesAsync();

            return(CreatedAtAction("GetShareServiceModel", new { id = shareServiceModel.ShareId }, shareServiceModel));
        }
        public async Task <IActionResult> ChangeShareOwner(ShareServiceModel shareServiceModel)
        {
            using (_context)
            {
                var share = await _context.ShareServiceModel.FindAsync(shareServiceModel.ShareId);

                if (share == null)
                {
                    return(NotFound());
                }

                share.TraderId = shareServiceModel.TraderId;

                await _context.SaveChangesAsync();
            }
            return(NoContent());
        }