问题描述
我在我的默认的HomeController将值设置到 Viewbag.message ，并成功地在我的共享/ _Layout.cshtml 。
I've set a value into Viewbag.message in my default HomeController and successfully display it in my Shared/_Layout.cshtml.
之后，我又加和的TestController在视图的TestController， Viewbag.message 似乎是空。我想知道什么是错。
After that I added another TestController and in the TestController view, Viewbag.message seems to be null. May I know what's wrong with it.
纠正我，如果我错了，从我的理解 Viewbag.Message 应提供来自全国各地的地方呢？
Correct me if I'm wrong,from my understanding Viewbag.Message should be available from all over the places?
推荐答案
ViewBag是一个动态的属性，它利用了新的动态特性在C＃4.0。
基本上它是围绕的ViewData的包装，也用于从控制器的数据传送到相应的视图。
ViewBag is a dynamic property that takes advantage of the new dynamic features in C# 4.0.Basically it is a wrapper around the ViewData and also used to pass data from controller to corresponding view.
- 这是生活中也仅在当前请求所在。如果则会发生重定向它的值变为零。
- 它不要求强制类型转换复杂的数据类型。
下面是显示持久性机制不同的汇总表。
<一href=\"http://www.$c$cproject.com/Articles/556995/Model-view-controller-MVC-Interview-questions-and\">Credit:$c$cProjectArticle
Below is a summary table which shows different mechanism of persistence. Credit:CodeProjectArticle
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