I need something like this for styles in XAML : <Application.Resources> #if DEBUG <Style TargetType="{x:Type ToolTip}"> <Setter Property="FontFamily" Value="Arial"/> <Setter Property="FlowDirection" Value="LeftToRight"/> </Style> #else <Style TargetType="{x:Type ToolTip}"> <Setter Property="FontFamily" Value="Tahoma"/> <Setter Property="FlowDirection" Value="RightToLeft"/> </Style> #endif </Applic
![Does XAML have a conditional compiler directive for debug mode?](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)