public async Task <IActionResult> AssignCompany(AssignCompanyModel aCM)
        {
            if (ModelState.IsValid)
            {
                var newFirma = new Firma()
                {
                    IdFirma = aCM.firma.IdFirma,
                    Nazwa   = aCM.firma.Nazwa
                };

                _s16693context.Add(newFirma);
                await _s16693context.SaveChangesAsync();

                var newKF = new KlientFirma()
                {
                    IdKlient = aCM.klient.IdKlient,
                    IdFirma  = newFirma.IdFirma
                };

                _s16693context.Add(newKF);

                await _s16693context.SaveChangesAsync();

                return(RedirectToAction(nameof(Index)));
            }
            else if (!ModelState.IsValid)
            {
                return(View("AssignCompany", aCM));
            }
            return(View(aCM));
        }
        public async Task <IActionResult> AssignCompany()
        {
            var kl = await _s16693context.Klient
                     .Include(o => o.IdKlientNavigation)
                     .FirstOrDefaultAsync(e => e.IdKlientNavigation.AdresEmail == HttpContext.User.FindFirst(ClaimTypes.Name).Value);

            var aCM = new AssignCompanyModel
            {
                klient = kl
            };

            return(View(aCM));
        }