public class UserProfileController : Controller
{
    public ViewResult Edit() { return View(); }
 
    public ViewResult SubmitUpdate()
    {
        // Get the user's existing profile data (implementation omitted)
        ProfileData profile = GetLoggedInUserProfile();
 
        // Update the user object
        profile.EmailAddress = Request.Form["email"];
        profile.FavoriteHobby = Request.Form["hobby"];
        SaveUserProfile(profile);
 
        ViewData["message"] = "Your profile was updated.";
        return View();
    }
}