WPF DataTrigger with OpacityMask

c#,wpf,mahapps.metro,visualbrush,opacitymask

After long time i found a working solution for me: The first problem was the missing Ressource BlackBrush which is used inside the Icons.xaml And the trick for the is replacing the whole Rectangle. I took an ContentControl for this job <ContentControl> <ContentControl.Style> <Style TargetType="{x:Type ContentControl}"> <Style.Triggers> <DataTrigger Binding="{Binding Path=IsOnline}"...