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?

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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