Richard it is relatively simple. 

Done it many times but not for a while - I'll hunt down my notes and get
something to you. Essentially it is making the .Net assembly com visible and
then it is easy to use in VFP.

I'll do that this evening.

Cheers


-----Original Message-----
From: ProfoxTech [mailto:[email protected]] On Behalf Of Richard
Kaye
Sent: Wednesday, 5 April 2023 1:37 AM
To: [email protected]
Subject: RE: Fun with .Net DLLs

Thanks, Alan, much appreciated.

I was just going through the various build options. The 32 bit thing will be
a the top of the checklist.

I thought there was a magic way to connect the debugger to an external
process (e.g. VFP). There's some stuff in Doug's white paper on how to do
that but I'm just at the beginning of this journey.

--

rk

From: ProfoxTech <[email protected]> On Behalf Of Alan Bourke
Sent: Tuesday, April 4, 2023 10:36 AM
To: [email protected]
Subject: Re: Fun with .Net DLLs

Richard
I assume you created a project of type 'Class Library'. No you can't debug
those, you need to host it in some other sort of exectuable project. To
debug that you either need to add another project of a type that is
executable to your solution (like a Windows Forms, WPF or Console
application) and reference the output from the first project in that, so you
can test it. You need to right-click on that project in Solution Explorer
and select 'Set As Startup Project'.

Normally I would recommend to test it on the .NET side you actually use a
proper testing framework like MSTest or NUnit. However what you're trying to
really needs to be checked visually so that's probably overkill initially.

Did you make the relevant methods COM-visible, i.e. like:

[ComVisible(true)]
[Guid("8C019E76-59BE-43A6-9DD9-66F7C9CAE67B")]
[ProgId("MyApp.ExcelConvert")]
[ClassInterface(ClassInterfaceType.AutoDual)]
[ComSourceInterfaces(typeof(IExcelConvertEvents))]
public class ExcelConvertHelper
{
...
}

I must confess I've never gotten the wwDotNetBridge registration-free COM to
work. I've always had to add an installer project in .NET and just make
users install and register the assembly.

Don't forget you have to build it as 32-bit to use it from VFP.

--
Alan Bourke
alanpbourke (at) fastmail (dot) fm

[excessive quoting removed by server]

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