Uploading file in mapped drive using asp.net

I have two servers. Application server and File server. I need to upload files directly to File server.so far what i have done is, when i upload i received "unknown user name and bad password error" .so i created an user name and password in file server like in the Application server (IUSR_ account. exact like in the开发者_StackOverflow application server). Now i receive "System.UnauthorizedAccessException: Access to the path \xxx\xx... is denied".Then i granted the network service user as full permission in File server shared folder. still i get the UnauthorizedAccessException. And one more, the application pool is running under the identity of network user. Help needed. Thanks in advance...

Are the machines part of the same domain? In that case you give the machine account (called machinename$) of the app server access to the file server. Then you run the app server app pool under the "network service" account. You also have to access the file server with a complete unc path (\\server\share\directory) as mapped drives are tied to a specific user.

If you're not in a domain environment you need to add code so that the app server logs on to the file server when attaching the network share. Having the same username/password pair on both the client and server is something that works magically when logging on interactively, but for services that is not an option.