Can File.Copy copy from a volume to a different volume?

The documentation doesn't say anything about it and I don't have any way to test it right n开发者_运维知识库ow. It does say it about File.Move which makes me think File.Copy might not work across different volumes.

This is related to this other problem I'm having.

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Just tested it, it works. Just use:

File.Copy(@"C:\File.txt", @"E:\File.txt");

I agree it is weird this isn't mentioned in the documentation though.

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There's no reason you can't copy a file across volumes. When performing a "move" operation, you're either doing a "rename" (when moving to the same volume) or "copy" then "delete" (when moving across volumes). Obviously a copy operation has to be able to work across volumes.

Note that the documentation you linked to for File.Move says:

This method works across disk volumes

So I don't know what your issue is.

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Yes, it works.

Note that moving a file is a different operation than copying it. When you move a file inside its volume the OS just changes the pointer to that file, it doesn't have to read and write all data. Copying a file or moving it out of its volume does require that, and that is probably the cause of that comment.