How to get disk usage statistics for remote network share?

If I have a network share say \\myfileserver\documents, can I find out programmatically how much disk space it is using (used/free space) using any API of some sort?

Please note it could be hosted by samba or it could be on a san storage device which means I won't be able to install anything on that machine to check the local disk usage and report it via some web service.

I'开发者_运维技巧m writing code in .NET but I'm sure that doesn't matter.

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GetDiskFreeSpaceEx() explicitly documents how you need to pass a UNC path: include the trailing backslash.