public IActionResult Create([Bind("EventTypeName")] EventTypeAddViewModel form, string returnUrl)
 {
     if (!ModelState.IsValid)
     {
         ViewData["ActiveMenu"] = "Admin";
         ViewData["ActiveLink"] = "EventTypeCreate";
         ViewData["Title"]      = "Create Event Type: Error";
         ViewBag.ReturnUrl      = returnUrl;
         return(View(form));
     }
     else
     {
         if (!_eventService.CreateEventType(form.EventTypeName, out string response))
         {
             ModelState.AddModelError("", response);
             ViewData["ActiveMenu"] = "Admin";
             ViewData["ActiveLink"] = "EventTypeCreate";
             ViewData["Title"]      = "Create Event Type: Error";
             ViewBag.ReturnUrl      = returnUrl;
             return(View(form));
         }
         else
         {
             if (!string.IsNullOrEmpty(returnUrl))
             {
                 return(Redirect(returnUrl));
             }
             else
             {
                 return(RedirectToAction(nameof(Index)));
             }
         }
     }
 }
        public IActionResult Create(string returnUrl)
        {
            EventTypeAddViewModel vm = new EventTypeAddViewModel();

            ViewData["ActiveMenu"] = "Admin";
            ViewData["ActiveLink"] = "EventTypeCreate";
            ViewData["Title"]      = "Create Event Type";
            ViewBag.ReturnUrl      = returnUrl;
            return(View(vm));
        }