I'm doing a test project of our C# Web solution from VS2003 to VS2005 using
the final RTM.  All of our code is C#.

After the solution upgrade runs, I try to build and get about 50 errors I
need to fix.  Fine, no big deal.

However, when I click on one of the source files (an aspx.cs for example)
the IDE reports about 150 additional errors on just that file - mostly syntax
errors.  All of the code has wavy underlining.

I think the IDE is interpretting my C# code as VB.NET.  The default language
in machine.config is C#.  I've set the default text editor in tools-->options
for .cs files to be C#.

These syntax errors do not show up during a build, only when I go to edit
the file.  When I compile the output window clearly shows the C# compiler
being used.  I did not even install VB.NET when I installed VS2005.

Is there a way to turn off the syntax checking during edit, or at least
force it to use the right language?  This is very frustrating.