public ActionResult Edit(FormCollection collection) { ViewBag.Admins = userManager.GetUsersFromRole("Admin").ToList(); ViewBag.Platform = platformManager.GetPlatform(Convert.ToInt32(collection["id"])); try { Platform platform = platformManager.GetPlatform(Convert.ToInt32(collection["id"])); platform.Admins.Add(userManager.GetUser(Convert.ToString(collection["admin"]))); platform.Name = Convert.ToString(collection["name"]); platformManager.ChangePlatform(platform); return(RedirectToAction("Index")); } catch { return(View()); } }