为什么_ViewStart.cshtml无法访问ViewBag对象？

Question

我的/ Views文件夹中有默认的_ViewStart.cshtml.我希望能够访问我的ViewBag对象,以便为所有视图设置默认标题.

但是,有:

@{
    Layout = "~/Views/Shared/SiteLayout.cshtml";
    ViewBag.Title = "bytecourse - Online Courses in Technology";
}

我得到"名称'ViewBag'在当前上下文中不存在"作为运行时错误.

我需要做什么？

Answer 1

简而言之......使用控制器的视图包.

ViewContext.Controller.ViewBag.MyVar = "myVal";

和

@ViewContext.Controller.ViewBag.MyVar

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这里有很好的信息:http://forums.asp.net/post/4254825.aspx

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通常,ViewData ["StoreName"]与ViewBag.StoreName相同

另外,Controller.ViewData ["StoreName"] = Controller.StoreName = ViewContext.Controller.ViewBag.StoreName = ViewContext.Controller.ViewData ["StoreName"]

但是每个视图和局部视图都有自己的viewdata实例.

http://jeffreypalermo.com/blog/viewdata-mechanics-and-segmentation-excerpt-from-asp.net-mvc-in-action/

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这里有另一个解决方案:https://stackoverflow.com/a/4834382/291753

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