public IActionResult Create(SeminarCreateViewModel model, string returnUrl = null) { ViewData["ReturnUrl"] = returnUrl; if (ModelState.IsValid) { Seminar seminar = new Seminar { Id = new System.Guid(), Title = model.Title, Description = model.Description, Content = model.Content }; _seminarService.CreateSeminar(seminar); // return View(model); } return(View(model)); }