Thanks for taking the time to respond. Very enlightening.
Thank you. I hadn't thought of doing that.
When I tried your example in my IDE, S always evaluated to "" in the locals window.
The msgbox always showed when equal values were compared, including LenB (S) = 0 vs vbNullString or ""
I also tried it with Not and with <>. What one would expect to be equal always displayed the msgbox
and S always evaluated to "".
I have no clue why the difference.
If I understand correctly, declaring strings in languages .Net and on, is done more precisely. I can see how the question might get more complicated.
Of course it may be that my Locals window doesn't know how to say vbNullString.
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