I saw the ViewBag in MVC 3. How's that different than ViewData in MVC 2?

推荐答案

它使用C＃4.0的动态特性。它实现了相同的目标作为可视数据，应该避免倾向于使用强类型视图模型（相同的方式，应避免可视数据）的

It uses the C# 4.0 dynamic feature. It achieves the same goal as viewdata and should be avoided in favor of using strongly typed view models (the same way as viewdata should be avoided).

所以基本上它取代的魔弦的：

So basically it replaces magic strings:

ViewData["Foo"]

与魔法属性的：

ViewBag.Foo

有哪些你没有编译时的安全性。

for which you have no compile time safety.

我继续指责微软曾经推出这个概念在MVC。

I continue to blame Microsoft for ever introducing this concept in MVC.

属性的名称是区分大小写的。

The name of the properties are case sensitive.