"onedaywhen" skrev i melding
m...
What if the user closes it but another user detects it has been closed
so they open it and your text file is locked because you've got it
open...?

Text files and similar (ini, html, ...) are not "open" or "locked" the way
Office files and databases are. Try opening a textfile in notepad, and the
either again in another notepad, or try moving / deleting it in windows
explorer.

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HTH. Best wishes Harald
Followup to newsgroup only please