OneWay TwoWay OneTime OneWayToSource Default

<TextBlock Text="{Binding Source={x:Static SystemFonts.IconFontFamily}, Path=Source}"></TextBlock> <Window.Resources> <FontFamily x:Key="CustomFont">Calibri</FontFamily></Window.Resources> And here's a TextBlock that binds to this resource: <TextBlock Text="{Binding Source={StaticResource CustomFont}, Path=Source}"></TextBlock>

four key ingredients: Commands. Command bindings. Command sources. Command targets. ApplicationCommands. NavigationCommands. EditingCommands. ComponentCommands. MediaCommands.