I hope that this be the last one

I've made various changes:
1. I've eliminated Set CellNavigation On | Off command.
2. I've added the 'CellNavigation' property to grid.
3. I've modified the original sample and added another.
4. Fixed a problem with OnChange event (Thanks to Esgici).
The sources are attached to this message.
Please test it and report any problem.
If all goes fine I'll do a full release with it.
Thanks in advance.
Regards,
Roberto.