Calling .NET dll function from VB6

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Martin Russ - 21 Oct 2005 00:10 GMT

Hi,

I have a .dll written in .NET that contains various functions, some of which
I need to call from an existing VB6 application.

I've searched all over the net and found some articles, but none of which
help.

I'm creating the .tlb file for COMInterop when the .dll is compiled, but
when I try to access the function within VB6, I 'always' get the following
error:

Run-time error '-2147024713 (800700b7)':

Automation Error
Cannot create a file when that file already exists.

Does anybody have any experience of doing this that could kindly help?

Thanks in advance...
Martin R

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Dick Grier (on the road) - 21 Oct 2005 21:55 GMT

Hi,

Take a look here:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcn7/html/vawl
kWalkthroughCreatingCOMObjectsWithVisualBasicNET.asp

Signature

Richard Grier, MVP
Hard & Software
Author of Visual Basic Programmer's Guide to Serial Communications, Fourth
Edition, ISBN 1-890422-28-2, Mabry Publishing (391 pages, includes CD-ROM).
July 2004.
See www.hardandsoftware.net for details. and contact information

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Martin Russ - 22 Oct 2005 14:53 GMT

Hi Richard,

I did what was suggested in the link, now I get an error saying it cannot
create the 'ActiveX' control. Am I doing something wrong in the way that I
call it? I've tried both early and late binding with no difference.

Looking forward to hearing back from you.

Thanks,
Martin R

> Hi,
>
> Take a look here:
>
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcn7/html/vawl
kWalkthroughCreatingCOMObjectsWithVisualBasicNET.asp

Reply to this Message

Paul Clement - 25 Oct 2005 19:09 GMT

¤ Hi Richard,
¤
¤ I did what was suggested in the link, now I get an error saying it cannot
¤ create the 'ActiveX' control. Am I doing something wrong in the way that I
¤ call it? I've tried both early and late binding with no difference.
¤
¤ Looking forward to hearing back from you.
¤

Try the KB article:

http://support.microsoft.com/?kbid=817248

Paul
~~~~
Microsoft MVP (Visual Basic)

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VB Forum / COM / October 2005

Calling .NET dll function from VB6