Visual Studio - Could not edit because it is not in the website

I have a link to some style sheet from the Yahoo Developer Network, this is what I have in the head section of my master page:

<link rel="stylesheet" type="text/css" href="" media="all" />

And for some reason Visual Studio (2008 Professional) keeps telling me:

"could not edit '' because it is not in the website".

My head tag has a runat="server" attribute so I can't have any code in there to inject the url.

Has anyone managed to get rid of this very useful message?

13.10.2009 16:43:33
What is it that you're doing right before you get this error message? Are you switching from source to design, or you opening a master page up or a content page. I've dropped your stylesheet link into a page and can't get it to do the same thing. More info would help.
Chris 4.11.2009 19:49:57

Though a definitive solution hasn't been found, a Microsoft guy in this ASP.NET Forums thread is asking for projects that exhibit this issue.

The proposed solutions that may work for you, but haven't worked for me, include:

  1. Ensure your CSS file has uniform line endings. Edit menu > Format Document in Visual Studio. Of course, this is hard when the file is on a Yahoo server.
  2. Install Visual Studio 2008 SP1.
  3. Open Visual Studio first, then open the solution file. (Don't open the solution file directly by double-clicking in Windows Explorer.)
3.11.2009 23:21:24
I've just installed Microsoft Visual Studio 2008 Service Pack 1 and the problem seems to be fixed. Thanks! Here's the URL to the VS 2008 SP1 installer...…
Jonathan Sewell 18.11.2009 10:55:59

Can you create a local copy of the stylesheet? Just during development, then switch it back to online source once you're ready for production?

13.10.2009 16:53:12

I was having this same issue in referencing the following style sheet, so I wrapped in a Response.Write, after that, the annoying message box stopped appearing.

<% Response.Write( @"<link rel=""stylesheet"" href="""" type=""text/css"" media=""all"" />" ); %>

I had also tried rel="stylesheet nofollow", but IE doesn't like that and will not render properly. The above works fine for FireFox and IE.

11.07.2012 16:38:10