ASP.NET MVC, strongly typed views, partial view parameters glitch

Question

If i got view which inherits from:

System.Web.Mvc.ViewPage

Where Foo has a property Bar with a type string
And view wants

Answer 1

Look at ASP.NET MVC source (HtmlHelper.cs -> RenderPartialInternal method -> line 258):

...

if (model == null) {
    if (viewData == null) {
        newViewData = new ViewDataDictionary(ViewData);
    }

...

this is exactly your case. ASP.NET MVC uses the ViewData from your ViewContext

UPDATED:

Try this instead:

<% Html.RenderPartial("_Bar", Model.Bar ?? "Default" ); %>