Modifying MVC 3 ViewBag in a partial view does not persist to the _Layout.cshtml

Question

I am using MVC 3 with the Razor view engine. I want to set some values in the ViewBag inside a Partial View and want retrieve those values in my _Layout.cshtml. For exampl

Answer 1

I've tried the following and it works:

In the (parent) view...

@Html.Partial("SomePartial", ViewData, null)

Note: ViewData is passed as the model argument, but you have to specify null for the viewData argument to use the correct overload. You can't use ViewBag because Html.Partial doesn't like dynamics.

Then , in the partial view...

@model ViewDataDictionary
@{
    Model["Title"] = "About us from the partial view";
}

Of course, if you need to use the model argument for a real model, you'll have to be more creative.