This post describes debugging on parallel BizTalk components (as in threads) running in VS 2010. With my current application, I submitted a message that would be routed to multiple locations. Before being routed, the file was being archived to a disk location (on the send component).
While debugging, the editor would switch between threads (as expected). I setup a breakpoint on the Archive Component, and the data-layer. In order to focus my debugging on the Archive component, I wanted to pause all other interfering threads.
To view the running thread in VS 2010 IDE, open the threads window, and select your process (appears under BizTalk Server 2010), right click and hit pause
This shows me two parallel tasks 1. ArchiveMessage… 2. Helper.Advance…
Happy debugging 🙂