Can you define multiple TargetTypes for one XAML style?

The setters in WPF styles are checked during compile time; CSS styles are applied dynamically.

You have to specify a type so that WPF can resolve the properties in the setters to the dependency properties of that type.

You can set the target type to base classes that contain the properties you want and then apply that style to derived classes. For example, you could create a style for Control objects and then apply it to multiple types of controls (Button, TextBox, CheckBox, etc)

<Style x:Key="Highlight" TargetType="{x:Type Control}">
    <Setter Property="Foreground" Value="Red"/>
</Style>

<Button Style="{StaticResource Highlight}" Content="Test"/>
<TextBox Style="{StaticResource Highlight}" Text="Test"/>
<CheckBox Style="{StaticResource Highlight}" Content="Test"/>

Leave a Comment