Can't access ViewBag in a partial view in ASP.NET MVC3

Question

I have a controller calling a view. In the view there is a PartialView called be @Html.Partial(\"ViewName\", model). This works fine.

But i

Answer 1

That should work without any problems. In my HomeController Index action I add a message to the ViewBag:

ViewBag.Message = "Welcome to ASP.NET MVC!";

On the Index View I add the partial view:

@Html.Partial("ViewName")

And on the partial view I render the message:

@ViewBag.Message

From the comments below: there seems to be a problem when you pass a model to the partial view. Then you can refer to the original ViewBag with

@ViewContext.Controller.ViewBag.Message

Answer 2

In my case @ViewContext.Controller.ViewBag.Message didn't work as well. I have a partial view that is referenced from different controllers with different models, inherited from a base model class. In this case the Controller.ViewBag comes as null.

My solution is:

@{
var dummy = ViewContext.Controller.ViewData.TryGetValue("CommonRules", out object rules);
}
...
@Html.Raw(rules)