CSS not updated during debugging ASP.NET MVC application

Please use Ctrl+F5 to refresh your browser.

F5 may give you the same page even if the content is changed, because it may load the page from cache. But Ctrl - F5 forces a cache refresh, and will guarantee that if the content is changed, you will get the new content.

hope this will help you

Thank you

I think this may be a browser cache issue. In in IE and FF I usually do Ctrl + F5 or Ctrl + Refresh button. Also you can manually clear the cache. For IE you can use the IE Dev Toolbar and for Firefox there is Firebug with both you can clear the cache easily. Not sure about chrome, sorry.

Sayed Ibrahim Hashimi

My Book: Inside the Microsoft Build Engine : Using MSBuild and Team Foundation Build

Your browser is caching the css. If you force a refresh with F5 that should display any changes.

I found another case in which this can happen.

We started our application with just plain links to the CSS files, then switched to using bundling. We updated the old <link href="@Url.Content("~/somePath/someStyle.css")" rel="stylesheet" type="text/css" /> to @Styles.Render("~/Styles/bundles/someStyle").

We also use a few stylesheets which are only needed for some pages, and they have their own bundle. Now, for one of them, we forgot to change the link tag to the @Styles.Render statement.

The result was that this CSS got updated now and then (so we thought everything is OK; the style wasn't missing), but we could not influence when the update happens. When I started making changes to the file, I realized that nothing I do (emptying the cache, rebuilding the project, restarting Cassini) will trigger an update. The browser always got a 304 Not modified.

So, if you have these symptoms, check your links.