1、直接Redirect后加 Controller/Action
Response.Redirect("/User/Edit");
// return Redirect("/User/Edit");
return RedirectToAction("about","Home");
Response.Redirect("/User/Edit");
2、直接return后加 Controller/Action
return Redirect("/User/Edit");
3、RedirectToAction方法，直接跳到一个action
return RedirectToAction("edit");
4、跳转的页并不在该Controller中
return RedirectToAction("about","Home");
@Url.Action("index", "product", new { id = item.Value.ID })
