C# - Deleting a file permanently -

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i've been out of c# game while since started iphone stuff, how can delete file (so not stored in memory) , isn't recoverable. if can't delete forever can scramble random data unable opened still exists?

it's possible overwrite file previous content cannot recovered. has done drive make sure correct block overwritten... c# interacts filesystem, not physical blocks, won't provide security.

the actual way ask drive securely erase varies interface (atapi vs sata, vs usb mass-storage vs scsi vs firewire), , c# doesn't provide simple way of commanding @ level.


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