ViewData 和 ViewBag都是页面级别的生命周期,TempData--Passing data between the current and next HTTP requests TempData默认是实现方式--存在session中,所以结论很简单,能不用就不用..要么负载时就麻烦了. Passing data between the current and next HTTP requests - See more at: http://www.rachelappel.com/w…