asp.net mvc 3 - Why can't _ViewStart.cshtml access the ViewBag object?

Question

I have the default _ViewStart.cshtml in my /Views folder. I'd like to be able to access my ViewBag object so I can set the default title for all my views.

However, with:

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

I get "The name 'ViewBag' does not exist in the current context" as a runtime error.

What do I need to do?

question from:https://stackoverflow.com/questions/6578029/why-cant-viewstart-cshtml-access-the-viewbag-object

Answer 1

In short... Use the controller's view bag.

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

and

@ViewContext.Controller.ViewBag.MyVar

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There is good information here: http://forums.asp.net/post/4254825.aspx

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Generally, ViewData["StoreName"] is same as ViewBag.StoreName

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

But every view and partial view gets its own instance of viewdata.

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

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There is a another solution here: https://stackoverflow.com/a/4834382/291753

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