The point isn't to avoid it. Of course it's inevitable - that was my point! The point is to use code to validate instead of some markup so that the programmer c

The point isn't to avoid it. Of course it's inevitable - that was my point! The point is to use code to validate instead of some markup so that the programmer can use their judgment about how it should be delegated. I wrote some example code below that shows how you can validate with list of countries in such a way that no code changes will be required when the list changes.