Problem with URL parameters and ISAPI DLL

Hi,

I am working on an ISAPI DLL to handle some file processing, during the initial testing phase I hard-coded the filenames to test which worked OK but as soon as I add a parameter to the URL such as 'http://mysite.com/myisapi.dll?file=filename" The server attempts to send the DLL file rather than actually executing it.

Any ideas why this might happen?

Thanks in advance!

try like this

Maybe the dll isn't in a folder that allows IIS execute? Check permissions.

I never worked with custom isapi's but for built in isapi filters the file extension is mapped to the appropriate dll, I'm not familiar with calling the .dll directly in the url.

Thanks for the replies.

It is an ISAPI extension not a filter so it should be called directly, but it executes fine if I call it like this:

http://mysite.com/myisapi.dll

But as soon as I add a parameter (Any parameter), for example:

http://mysite.com/myisapi.dll?f

It will not execute, it has the correct permissions because it can execute fine if I don't supply any parameters.