Adding unknown (at design time) properties to an ExpandoObject

Question

just exploring c# 4. Trying to get my head around all this dynamic stuff. Sorry if this question is silly, no experience in this domain.

If I have an ExpandoObject a

Answer 1

I just discovered this interesting fact: XAML Bindings to an ExpandoObject will also create the properties the binding is trying to access.

I still need more creativity to find out what this could be good for. Dynamic object creation on the UI? sounds cool :D I will try something out.