MvcForm调用一个局部视图的操作，但显示为纯文本。

I'm following the video on Microsoft's Virtual Academy named "Developing ASP.NET MVC 4 Web Applications Jump Start". In part 5: Integrating Javascript and MVC 4 they start showing off how to use PartialViewResults. I've copied the code exactly as they have in the video, however, I'm getting a different result. They don't show some of the code (SessionController) and it was required for me to figure that part out myself, so maybe that's where I'm messing up.I'm following the video on Microsoft's Virtual