public ActionResult Edit(SeminarCreateViewModel model, Guid id)
 {
     if (ModelState.IsValid)
     {
         var     x       = model;
         Seminar seminar = new Seminar
         {
             Id          = model.Id,
             Title       = model.Title,
             Description = model.Description,
             Content     = model.Content
         };
         _seminarService.UpdateSeminar(seminar);
         return(RedirectToAction("Index"));
     }
     return(View(model));
 }