True, however the C# route does not use the sql xp command shell (that I know of) so would not be as limiting.

The other alternative along those lines is to impersonate the security context in c# before accessing the network drive, then disposing each time. This would be better if you...

You can pass credentials when attaching to a UNC

--clear any ipc$ connections

net use \\server\share /delete

--map the drive

net use \\server\share /user:domain\username password

--do whatever you want

--cleanup

net use \\server\share /delete

it can also be...