How to debug a C# .NET application in Visual Studio 2010 that is started from another process

Question

I have a .NET GUI application written in C# and a PDF printer. The PDF printer has a field where you can set a command to start an external application.

In this case

Answer 1

Consider adding a call into your code that explicitly requests that the debugger be attached at the current location. This has been around since Win32 days, and surfaces in .NET as System.Diagnostics.Debugger.Break (and System.Diagnostics.Debugger.Launch).

You can also add logic to decide when to trigger this if you don't want to do it the first time through:

   #if DEBUG
      if (++staticCounter > 3) System.Diagnostics.Debugger.Break();
   #endif

And, of course, you'll want to disable it for production.