[Validation / view models / page lifecycle series] Can't make ModelState server validation work when it happens in async method in parent VM of VM that posts back to server

Then it will be correct to catch it, log it and not set context.IsCommandExceptionHandled / context.IsPageExceptionHandled.

So, clunky but it does the job:

I can finally use properties safely for parent VM references in children. :slight_smile: