How do we do generic validation?
Meaning, before the user leaves the field, have a chance to examine the value.
Then do one of 2 things:
1) Accept the value
2) Reject the value, and have the grid restore the last 'good' value
There is a Validating event, but it's generic, doesn't say which row/column is being validated.
I couldn't find anything about the proper way to do validation in any of the samples.