How can I impersonate a user in code?

Hi all,

I'm trying to save an uploaded file to a share on another computer in the
domain. If I use the <identity impersonate ..... /> tag in the web.config
and enter the credentials of a domain user which has sufficient rights on
that share it works fine.

However I don't need (and want) to run the complete site under this user, I
only need to impersonate the moment I'm trying to save the file. I've tried
to achieve this is code by creating a WindowsIdentity object and
impersonating it but that isn't working (NotSupported Exception). The code
works fine in a sample winapp but apparantly a webapp doesn't like it.

Does anyone have an idea on how I can achieve the impersonation in code?

TIA,
Friso Wiskerke


.

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