Some ideas.
- Make sure it’s a debug build and not release
- Turn off optimizations in your project properties if they are on
- Try inserting
Debugger.Break()
in your code instead of a breakpoint
in VS - Make sure breakpoints are enabled (Debug->Windows->Breakpoints toolbar), and breakpoint symbol should be solid
- Execute your application. Load Debug->Window->Modules window. Check your assembly to see if symbols are loaded. It may give a relevant status message if not.
Have you been adjusting the date on your computer at all? This can really screw up a build process. If so, delete all your obj/bin folders manually and recompile.