RegionAdapterMappings

Use the following snippet to register the region adapter mappings:

protected override void ConfigureRegionAdapterMappings(RegionAdapterMappings regionAdapterMappings)
    {
        base.ConfigureRegionAdapterMappings(regionAdapterMappings);
        regionAdapterMappings.RegisterMapping(typeof(Ribbon),
            (IRegionAdapter)Container.Resolve(typeof(RibbonRegionAdapter)));
        regionAdapterMappings.RegisterMapping(typeof(BackstageTabControl), 
            (IRegionAdapter)Container.Resolve(typeof(BackstageTabControlRegionAdapter)));
        regionAdapterMappings.RegisterMapping(typeof(RibbonMenu), 
            (IRegionAdapter)Container.Resolve(typeof(RibbonMenuRegionAdapter)));
        regionAdapterMappings.RegisterMapping(typeof(RibbonTabItem), 
            (IRegionAdapter)Container.Resolve(typeof(RibbonTabItemRegionAdapter)));

        // ...   
    }