WPF\'s support for DynamicResource is great because this allows users to change the look and fell of a running application.
WinRT does not support DynamicResource th
You don't always need a dynamic resource. Change the value of a "static" resource like this:
Resources.Remove("foo");
Resources.Add("foo", "A new hope");
This doesn't always work for declarative stuff. What you can do in these cases is provide a wrapper object; you can't replace the wrapper but you can update its properties. Alas there are cases for which this is not viable.