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Asked: 2026-05-10T15:38:00+00:00

I’m developing a C# assembly which is to be called via COM from a

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I’m developing a C# assembly which is to be called via COM from a Delphi 7 (iow, native win32, not .net) application.

So far, it seems to work. I’ve exported a TLB file, imported that into my Delphi project, and I can create my C# object and call its functions.

So that’s great, but soon I’m going to really want to use Visual Studio to debug the C# code while it’s running. Set breakpoints, step through code, all that stuff.

I’ve tried breaking in the Delphi code after the COM object is created, then looking for a process for VS to attach to, but I can’t find one.

Is there a way to set VS2008 up to do this? I’d prefer to just be able to hit f5 and have VS start the Delphi executable, wait for the C# code to be called, and then attach itself to it.. But I could live with manually attaching to a process, I suppose.

Just please don’t tell me I have to make do with MessageBox.Show etc.

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1 Answer

  1. In the VS2008 project properties page, on the Debug tab, there’s an option to set a different Start Action.

    This can be used to run an external program (e.g. your Delphi app) when you press F5.

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