Intellisense for ASP.NET Markup Not Appearing In Visual Studio 2008

I recently came across the problem where the intellisense for ASP.NET markup was not appearing in Visual Studio 2008.

After doing a Google search, I had gathered and tried the following suggestions:

• In Visual Studio: Tools ➞ Options ➞ Text Editor ➞ All Languages ➞ Turn on “Auto list members”
• Reinstalling Resharper
• Deleting the HKEY\Local Machine\Software\Microsoft\VisualStudio\9.0 registry node (which then prevented Visual Studio from running!)
• Repairing Visual Studio
• Uninstalling and then reinstalling Visual Studio

And still it didn’t solve my issue - there was still no ASP.NET intellisense for me!

The solution was to right click on a .aspx page in my solution, select “Open With” and change the default setting back to “Web Form Editor”.

Somehow, someway, this had changed.

Hopefully this will save someone else a few days of hassle!