DLLImport and Unable to Load DLL

[Michael Tissington]

I have a C# function that calls into a C++ DLL

I have placed the DLL in the 'bin' folder of my asp.net project

I'm using something like
[DllImport("Keycode.dll", EntryPoint="GenerateKey")]

However when I try to call the function I'm getting an error 'Unable to Load
DLL'

Should I specifiy the path to the dll in the DllImport?
If so - do I specifiy a path relative to the web site or a physical path?

Anything else that could be causing this error?
--
Michael Tissington
Oaklodge Technologies
http://www.oaklodge.com/technology

[Mattias Sjögren]

Michael,

Should I specifiy the path to the dll in the DllImport?

See http://www.dotnetinterop.com/faq/?q=LoadLibrary

On the platforms where it's available, you can also call the
SetDllDirectory API.

http://msdn.microsoft.com/library/en...ldirectory.asp

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/
Please reply only to the newsgroup.

[Michael Tissington]

Mattias,

Thanks for the LoadLibrary link, however this does not seem to work when
running as an ASP.NET web page.

I guess I need to get the path to the original location of the page and not
the temporary location of the assembly.

--
Michael Tissington
Oaklodge Technologies
http://www.oaklodge.com/technology

"Mattias Sjögren" <ma********************@mvps.org> wrote in message
news:u8**************@TK2MSFTNGP10.phx.gbl...

Michael,

Should I specifiy the path to the dll in the DllImport?

See http://www.dotnetinterop.com/faq/?q=LoadLibrary

On the platforms where it's available, you can also call the
SetDllDirectory API.

http://msdn.microsoft.com/library/en...ldirectory.asp

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/
Please reply only to the newsgroup.

[Jeffrey Tan[MSFT]]

Hi Michael,

When you running in ASP.Net what problem do you get?
May be you can try to use absolute path to see if the problem will
arise.

Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

--------------------
| From: "Michael Tissington" <mi*****@nospam.com>
| References: <un**************@tk2msftngp13.phx.gbl>
<u8**************@TK2MSFTNGP10.phx.gbl>
| Subject: Re: DLLImport and Unable to Load DLL
| Date: Thu, 11 Sep 2003 15:27:12 -0700
| Lines: 36
| X-Priority: 3
| X-MSMail-Priority: Normal
| X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
| Message-ID: <u0**************@TK2MSFTNGP09.phx.gbl>
| Newsgroups:
microsoft.public.dotnet.framework.aspnet,microsoft .public.dotnet.languages.c
sharp
| NNTP-Posting-Host: antelope.oaklodge.com 63.67.71.5
| Path: cpmsftngxa06.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTN GP09.phx.gbl
| Xref: cpmsftngxa06.phx.gbl
microsoft.public.dotnet.languages.csharp:184228
microsoft.public.dotnet.framework.aspnet:176211
| X-Tomcat-NG: microsoft.public.dotnet.languages.csharp
|
| Mattias,
|
| Thanks for the LoadLibrary link, however this does not seem to work when
| running as an ASP.NET web page.
|
| I guess I need to get the path to the original location of the page and
not
| the temporary location of the assembly.
|
| --
| Michael Tissington
| Oaklodge Technologies
| http://www.oaklodge.com/technology
|
| "Mattias Sjögren" <ma********************@mvps.org> wrote in message
| news:u8**************@TK2MSFTNGP10.phx.gbl...
| > Michael,
| >
| > >Should I specifiy the path to the dll in the DllImport?
| >
| > See http://www.dotnetinterop.com/faq/?q=LoadLibrary
| >
| > On the platforms where it's available, you can also call the
| > SetDllDirectory API.
| >
| > http://msdn.microsoft.com/library/en...ldirectory.asp
| >
| >
| >
| > Mattias
| >
| > --
| > Mattias Sjögren [MVP] mattias @ mvps.org
| > http://www.msjogren.net/dotnet/
| > Please reply only to the newsgroup.
|
|
|

[Michael Tissington]

Thanks - seems that I was chasing a red hering - turns out to be a security
issue on the bin folder ...

--
Michael Tissington
Oaklodge Technologies
http://www.oaklodge.com/technology

"Jeffrey Tan[MSFT]" <v-*****@online.microsoft.com> wrote in message
news:du**************@cpmsftngxa06.phx.gbl...

Hi Michael,

When you running in ASP.Net what problem do you get?
May be you can try to use absolute path to see if the problem will
arise.

Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

--------------------
| From: "Michael Tissington" <mi*****@nospam.com>
| References: <un**************@tk2msftngp13.phx.gbl>
<u8**************@TK2MSFTNGP10.phx.gbl>
| Subject: Re: DLLImport and Unable to Load DLL
| Date: Thu, 11 Sep 2003 15:27:12 -0700
| Lines: 36
| X-Priority: 3
| X-MSMail-Priority: Normal
| X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
| Message-ID: <u0**************@TK2MSFTNGP09.phx.gbl>
| Newsgroups:
microsoft.public.dotnet.framework.aspnet,microsoft .public.dotnet.languages.c sharp
| NNTP-Posting-Host: antelope.oaklodge.com 63.67.71.5
| Path: cpmsftngxa06.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTN GP09.phx.gbl
| Xref: cpmsftngxa06.phx.gbl
microsoft.public.dotnet.languages.csharp:184228
microsoft.public.dotnet.framework.aspnet:176211
| X-Tomcat-NG: microsoft.public.dotnet.languages.csharp
|
| Mattias,
|
| Thanks for the LoadLibrary link, however this does not seem to work when
| running as an ASP.NET web page.
|
| I guess I need to get the path to the original location of the page and
not
| the temporary location of the assembly.
|
| --
| Michael Tissington
| Oaklodge Technologies
| http://www.oaklodge.com/technology
|
| "Mattias Sjögren" <ma********************@mvps.org> wrote in message
| news:u8**************@TK2MSFTNGP10.phx.gbl...
| > Michael,
| >
| > >Should I specifiy the path to the dll in the DllImport?
| >
| > See http://www.dotnetinterop.com/faq/?q=LoadLibrary
| >
| > On the platforms where it's available, you can also call the
| > SetDllDirectory API.
| >
| > http://msdn.microsoft.com/library/en...ldirectory.asp | >
| >
| >
| > Mattias
| >
| > --
| > Mattias Sjögren [MVP] mattias @ mvps.org
| > http://www.msjogren.net/dotnet/
| > Please reply only to the newsgroup.
|
|
|