Silverlight wcf ria services : Validation Annotation questions

How do i do the equivalent of [Required] in xaml code behind?

I have a dataform that autogenerates the fields from a domain service class. Is it possible t开发者_如何学Pythono add or remove the [Required] validation in the _AutoGeneratingField method?

Thanks

Try to create extension class for your entity, where you can use [Required] attribute.

If you need some examples - let me know.