How to invoke debugger on a running process?

I have a FORTRAN dll compiled with FTN95 as Debug Win32. This dll is called by code in a .NET C# wrapper which is itself called from a .NET C# EXE.

When the process is running, I want to be able to debug the FORTRAN code, either by starting the debugger and attaching to the process or by planting something in the FORTRAN code that will invoke the debugger at run time.

How can I do that?

Thanks, John

I don't think that you can do that.

You will probably need to put some PRINT statements into your code.