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Export function from VB.Net DLL

P: n/a
Is there a way to export functions from a VB.Net Dll, similar to the VC
_declspec(dllexport) function or .def files, so the functions will show as
exported using dumpbin?
Any URL to a description of how to do it, or why you can't (I've been
looking...)?
Thanks
Nov 16 '06 #1
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3 Replies


P: n/a
AFAIK not possible from .NET (at least with managed code). The trend is now
to expose libraries as a well defined set of class hierarchies rather than
as a bunch of "flat" unrelated functions...

You may want to elaborate a bit on your exact need (when you reference a DLL
you have access to all its public classes and related members, you can also
expose a .NET component to COM, is exposing your code as a WINAPI function a
strict requirement ?).

--
Patrice

"rbrian" <rb****@community.nospama écrit dans le message de news:
51**********************************@microsoft.com...
Is there a way to export functions from a VB.Net Dll, similar to the VC
_declspec(dllexport) function or .def files, so the functions will show as
exported using dumpbin?
Any URL to a description of how to do it, or why you can't (I've been
looking...)?
Thanks

Nov 16 '06 #2

P: n/a
Thank you, Patrice.

My immediate need is to call .Net dll functions from National Instruments
Labview (which I am VERY new at), which has a 'Call Library Function Node'
but cannot see my dll functions. This would be the easiest wat to implement
what I want (since the code is done). I do have other options (other Labview
nodes such as '.Net Object constructor') that will just take a bit more work,
since there are issues with transferring variables and structures between
the NI and VB code. Or maybe write some intermediate C code, but that was a
long time ago...

Any references to info on "exposing libraries" and their classes that may
work here?
"Patrice" wrote:
AFAIK not possible from .NET (at least with managed code). The trend is now
to expose libraries as a well defined set of class hierarchies rather than
as a bunch of "flat" unrelated functions...

You may want to elaborate a bit on your exact need (when you reference a DLL
you have access to all its public classes and related members, you can also
expose a .NET component to COM, is exposing your code as a WINAPI function a
strict requirement ?).

--
Patrice

"rbrian" <rb****@community.nospama écrit dans le message de news:
51**********************************@microsoft.com...
Is there a way to export functions from a VB.Net Dll, similar to the VC
_declspec(dllexport) function or .def files, so the functions will show as
exported using dumpbin?
Any URL to a description of how to do it, or why you can't (I've been
looking...)?
Thanks


Nov 16 '06 #3

P: n/a
AFAIK .NET is usable either from .NET or can be exposed using COM (but not
as WINAPI functions). You could also if possible from LabView expose this a
web service or something similar...

I know nothing about LabView but I my personal preference would be likely to
go for the ".net Object Constructor" as it looks likre the intended path
(and if those issues are solved, it will be even better).

Don't know what those issues are but some of them could be perhaps solved
using .NET attributes (for example a thing that comes to mind would be
alignment issues for structure members or similar things between LabView
/.NET). Also I would try perhaps a LabView forum...

Good luck.

--
Patrice

"rbrian" <rb****@community.nospama écrit dans le message de news:
7D**********************************@microsoft.com...
Thank you, Patrice.

My immediate need is to call .Net dll functions from National Instruments
Labview (which I am VERY new at), which has a 'Call Library Function Node'
but cannot see my dll functions. This would be the easiest wat to
implement
what I want (since the code is done). I do have other options (other
Labview
nodes such as '.Net Object constructor') that will just take a bit more
work,
since there are issues with transferring variables and structures between
the NI and VB code. Or maybe write some intermediate C code, but that was
a
long time ago...

Any references to info on "exposing libraries" and their classes that may
work here?
"Patrice" wrote:
>AFAIK not possible from .NET (at least with managed code). The trend is
now
to expose libraries as a well defined set of class hierarchies rather
than
as a bunch of "flat" unrelated functions...

You may want to elaborate a bit on your exact need (when you reference a
DLL
you have access to all its public classes and related members, you can
also
expose a .NET component to COM, is exposing your code as a WINAPI
function a
strict requirement ?).

--
Patrice

"rbrian" <rb****@community.nospama écrit dans le message de news:
51**********************************@microsoft.com...
Is there a way to export functions from a VB.Net Dll, similar to the
VC
_declspec(dllexport) function or .def files, so the functions will show
as
exported using dumpbin?
Any URL to a description of how to do it, or why you can't (I've been
looking...)?
Thanks



Nov 16 '06 #4

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