[Newbies] determining file size?

[Van Upboy]

Hi,

I'm listing files in a directory, but I want to show more than just the
filename (like file size and may be creation date). I've searched for some
time on the Internet, but I can't find the answer. How to do this?

I've tried this:
    aFile := (FileDirectory default directoryNamed: directoryName)
            assureExistence;
            readOnlyFileNamed: 'testfile.pdf'.
    and then tried: aFile size but that doesn't seem to work.

Regards,
Van.
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