I used to be able to do the following in Preview 3
<%=Html.BuildUrlFromExpression<AController>(c => c.AnAction(par1, par2)%>
How am I supposed to create urls in a strongly typed way with the MVC Beta? The only thing so far I have found is
<%= Html.ActionLink('aName', 'ActionName', 'ControllerName')%>
This is not strongly typed off course.
You need the ASP.NET MVC Beta Futures, which is a separate download
ASP.NET MVC Beta Futures
then your original code will work as before.
See this post for getting it working: SO post on missing extensions