I\'m using ASP.NET MVC and I have a partial control that needs a particular CSS & JS file included. Is there a way to make the parent page render the script
Sorry, you cannot from a partial control refer "up" to something in the parent page (or add anything). The only communication is "down" from the parent to the partial by passing the ViewData / Model.
You are describing functionality of a master page and a normal page using the content place holders, but partial controls do not function like that.
But, if I am not mistaken, you can just physically add the script or link tags to the actual parent page that you render the partial page on - the CSS should be used by the partial page as well.