can an asp page call a .NET DLL that...

  • Thread starter Thread starter Joe Van Meer
  • Start date Start date
J

Joe Van Meer

Hi ng,

Can an Asp page call a function in a .NET dll?

I have a set of asp pages that need to call a .NET DLL that does a Digital
Signature XML to an xml doc.

I have tested my DLL with a windows form app that calls the same function in
question and it works as it should.

When I call the same method via my asp page COM object I get the object no
problem, as well as the method, but all it does is return an empty string
even though I have it returning mydocxml.outerxml.toString();

I can call a second test method no problem that returns a string and that
gets to the form where I need it. But the function I reallly need it to work
doesnt return the string via the interop method, but does via my windows
form app.

My routine includes using regasm.exe , the putting the dll in the gac,
iisreset then test the page. Still no return string.

Could this be permission related or am I screwing this up another way? Like
my code in the dll deals with X509Certificate2 objects and cryptography...am
I overlooking something?

Cheers & thanks :)
 
P.S.

I also have all my methods decalred as public, a class interface, guids for
my class and interface, and com visible attribute on my methods .

cheers
 
Can an Asp page call a function in a .NET dll?

I have a set of asp pages that need to call a .NET DLL that does a Digital
Signature XML to an xml doc.

I have tested my DLL with a windows form app that calls the same functionin
question and it works as it should.

When I call the same method via my asp page COM object I get the object no
problem, as well as the method, but all it does is return an empty string
even though I have it returning mydocxml.outerxml.toString();

I can call a second test method no problem that returns a string and that
gets to the form where I need it. But the function I reallly need it to work
doesnt return the string via the interop method, but does via my windows
form app.

My routine includes using regasm.exe , the putting the dll in the gac,
iisreset then test the page. Still no return string.
Click to expand...

It's hard to say without looking at the signatures of your COM-visible
methods. Your WinForms test doesn't help much there as (if I
understand correctly) you're just calling it directly - i.e. .NET-
to-.NET - and not via COM interop, as is the way it works from ASP.
 
HI thx Pavel,

It turns out that my certificate was stored in the wrong spot in my store on
server and my code wasn;t locating it.

Store.LocalMachine was where it should have been installed in the root, but
it was sent to another spot!

cheers & thanks for replying man, joe :P



Can an Asp page call a function in a .NET dll?

I have a set of asp pages that need to call a .NET DLL that does a Digital
Signature XML to an xml doc.

I have tested my DLL with a windows form app that calls the same function
in
question and it works as it should.

When I call the same method via my asp page COM object I get the object no
problem, as well as the method, but all it does is return an empty string
even though I have it returning mydocxml.outerxml.toString();

I can call a second test method no problem that returns a string and that
gets to the form where I need it. But the function I reallly need it to
work
doesnt return the string via the interop method, but does via my windows
form app.

My routine includes using regasm.exe , the putting the dll in the gac,
iisreset then test the page. Still no return string.
Click to expand...

It's hard to say without looking at the signatures of your COM-visible
methods. Your WinForms test doesn't help much there as (if I
understand correctly) you're just calling it directly - i.e. .NET-
to-.NET - and not via COM interop, as is the way it works from ASP.
 
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