Have you installed the Visual Studio Tools? There are templates for partial controls.
Basically you create a new user control and inherit from ContentControlBase
[TemplateDescriptor( Inherited = true, AvailableWithoutTag = true)] public partial class NewsArticleTeaser : ContentControlBase
Thank you! Exactly what I was looking for :)
I've seen a lot of guides on how to render pages in ContentAreas in MVC but I can't find any guides on how to do that in Webforms. Is there an easy way to do that?