Debugging two web applications in asp.net

Question

I have a solution file containing multiple web applications and components. Mostly these web applications operate independently of one another, but I need to be able to response.redirect from one application to another. This works, and the new page runs, but I can't step into the code in the second web app and debug it.

I have both web applications set to "Always Start When Debugging" = True, with the first web app (the one that's redirecting) set as the startup web application. Does anyone know a trick that will let me step into the code in the second web application?

Answer 1

Are both web applications running in the same process? What version of ASP.Net, IIS, and the .Net framework are you using? Those are my initial questions before I start giving other ideas.

Answer 2

Open up a second instance of Visual Studio, then Ctrl+Alt+P (menu Tools > Attach to Process) then attach to the appropriate web server process (if you run under IIS this may be w3wp.exe or aspnet_wp IIRC, if you use the built in web server then attach to the process which lists the appropriate port for your project).

Optionally just run the second one and manually go to the first one in your browser by entering the appropriate address and trigger the redirect which you have verified is working.