I recently installed VS2012 and working on work projects that I used to work on with VS2010. I never had an issue with VS2010 not recognizing asp prefixed tags but VS2012 is. I tried deleting the ReflectedSchemas
folder under
C:\Users[User_name]\AppData\Roaming\Microsoft\VisualStudio\11.0\
but still not working. Anyone ran into this issue in VS2012?
Sorry for not answering this question before. Though I'm assuming VS2012 service pack or update fixed this issue for me.