ASP.NET - IIS 7 - DotNetNuke - How do I force browsers to reload the site's CSS?

Question

I have run into the problem where my css files are being cached in browsers. This is a fairly common problem, and a common solution is to simple add a version number in the url to the css file. Example: MyCSS.css?ver=1.12

However, I'm using a custom skin for DotNetNuke which forces the usage of the file: skin.css

I don't have a way to point browsers to skin.css?ver=1.12 (or at least I'm not aware of a way)

Are there any tricks I can play with IIS, DNN, or ASP.NET (default.aspx file for DNN perhaps?) to force clients to reload CSS?

Thanks. Getting really tired of serving broken content to clients after updates.

Answer 1

In the IIS Manager, right-click on the file and select Properties. Go to the HTTP Headers tab, tick Enable Content Expiration and set a very low value on your new file.