No - I haven't really looked into it that far. I have a lot of stuff written using 6 that I can re-use for new customers without too much disturbance. I make extensive use of DDE (which I know is out of favour these days), and I'd be very stuck if it didn't migrate smoothly.
I've produced a bit of DF1 interface software for communication with Rockwell PLCs (saving the Rockwell licence fee for RSLinx for each app) that is very sensitive to changes of environment - if .NET caused any problems, I couldn't afford the time to sort it out.
I wouldn't say my approach is Luddite, but I'm working on "if it ain't broke - don't fix it". I'm working 12 hrs 6/7 at present, but things will calm down in the summer, & I may try some experiments.
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