What is the difference between x:Reference and ElementName?

Question

According to the x:Reference Markup Extension page on MSDN, x:Reference

References an instance that is declared elsewhere in XAML markup. Th

Answer 1

ElementName is platform specific. I.e. it may or may not be present based on which platform you're using. x:Reference elevates that concept to a XAML native feature. Thus any platform that supports XAML supports x:Reference.