Unsafe codes in a webservice

... yes, I use the same arguments.

But in the meantime I found the reason I think.

Indeed it is an unhandled exception in my Delphi-Dll.

There was a necessary file in the web service execution directory (..\Microsoft Shared\DevServer\...) missing.
This case does never happen when I execute the console application because all the file are present in my normal application directory.

The Dll uses the function
ExtractFilePath(Application.Exename)
and this is different in case of running as webservice.

Thank you for your help.

Yeah, the English translation of that is:

"An attempt was made to read or write protected memory. This is often an indication that other memory is corrupt."

which, IIRC, is the error message you get when an AccessViolation exception is thrown.

However, the function's signature certainly seems innocuous enough.

When you called it from the console application, did you use exactly the same signature and pass it the same argument?

...yes, I use DllImport:

static extern Int32 StartWaage(Int32 wgID);     [DllImport("oasepcDLL.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]

the german error message is
"Es wurde versucht, im geschützten Speicher zu lesen oder zu schreiben. Dies ist häufig ein Hinweis darauf, dass anderer Speicher beschädigt ist."

What sort of error messages are you getting - Access Violations and that sort of stuff?

Also are you using P/Invoke or COM interop to call functions in the Delphi dll?

Thank you for your answer.

The compiler switch was set for the buid options but not in the web.config.

I have adjusted this but I still get the same result.