Why would the debugger not be stopping at a breakpoint in my ASP.NET application?

Question

I\'m trying to debug a large ASP.NET application.

I set a breakpoint on the first line in Page_Load in Default.aspx.cs.

When I start the application, my

Answer 1

Try doing a full rebuild on the application. Pay attention that it's in the "Debug" configuration.

As far as I understand (but I'm not an expert in these things), this can happen when the debug info files (.PDB) are out of sync with the real compiled thing.