Three steps take a stock WPF application to a styled one: install the package, merge the resource dictionaries, swap Window for MetroWindow. Nothing else in your XAML has to change — your existing controls are restyled where they stand.

This guide assumes the migration from version 1.6.5 to 2.0.

An application that opens and closes a lot of views can grow slower the longer it runs. Switching to a view that took a moment at first takes several seconds later on, and nothing about that view has changed.

A screen reader, an inspection tool and a UI test all ask the same thing: what is this element, what is it called, and what does it hold. WPF answers most of that from the control itself, and a control library has to fill in the rest.