Visual studio Attaching debugger to windows service - never hits the break points

I attach VS 2010 t开发者_StackOverflowo service process; after that I put breakpoint in several methods but they never seem to be hit. Any idea or tips?

Note: The services process installed is a release build. Do I have to have a debug build installed for this?

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You need to have a debug build for this.

In release mode, the debug info is discarded and code is optimized, so there is no way to link to original source code.

In debug mode, debugging and project state information is retained so the debugger canlink to the source code. It also emits DebuggableAttribute that tells JIT compiler that the assembly has debug info.

Helpful link: http://msdn.microsoft.com/en-us/library/ms241903.aspx