Convert List to ObservableCollection in WP7

Question

I don\'t know if it\'s just too late or what, but I don\'t see how to do this...

What I\'m expecting to do, and what the object browser says is there, is this:

Answer 1

ObservableCollection has several constructors which have input parameter of List or IEnumerable:
List list = new List();
ObservableCollection collection = new ObservableCollection(list);