public ActionResult Complex5(string xx)
        {
            var item = new SimpleViewModel();
            if(TryUpdateModel<SimpleViewModel>(item))
            {
                return RedirectToAction("Complex5");
            }

            return View(item);
        }
 public ActionResult Form2(SimpleViewModel item1, SimpleViewModel item2)
 {
     return Content("item1 = " +item1.Username + ":" + item1.Age + ". item2 = " + item2.Username + ":" + item2.Age);
 }