How to override a global style (that doesn't have an x:Key), or alternatively apply a named style to all type-targeted controls?

resourcedictionary, styles, wpf, xaml

Solution

Try this:

<Style TargetType="{x:Type StackPanel}" BasedOn="{StaticResource {x:Type StackPanel}}">
  <!-- ... -->
</Style>

I have declared my base styles in a ResourceDictionary in App.xaml, if i override them in a specific window like this, it usually works.

Problem

I declared a style that I want to apply to ALL the buttons in the project, the style resides in the ResourceDictionary: ``` <Style TargetType="StackPanel"> <Setter Property="Orientation" Value="Horizontal" /> <Setter Property="VerticalAlignment" Value="Center"/> <Setter Property="HorizontalAlignment" Value="Center"/> </Style> ``` Now, in some window, I want to inherit from this style but add a value: ``` <Style TargetType="StackPanel"> <Setter Property="Margin" Value="5"/> </Style> ``` The problem is that it doesn't inherit from the global style, in order to inherit I have to assign a key to the global style: ``` <Style TargetType="StackPanel" x:Key="StackPanelStyle" /> ``` And then in the window's XAML inherit (or/and override - optional) it: ``` <Style TargetType="StackPanel" BasedOn="StackPanelStyle" /> ``` The problem is that if you assign a key, it's not global and you have to call it on each window/scope. A solution to my question should be one of the two (is there anything else I am missing out?): - Have a global style with a key, that is automatically applied to all its targeted controls in the entire application. - A way to refer to the ResourceDictionary-level unnamed style without and override it. I thought about redeclaring the styles near the named styles (in the ResourceDictionary) which actually works: ``` <!--In the ResourceDictionary--> <Style x:Key="StackPanelStyle" TargetType="StackPanel"> <Setter Property="Orientation" Value="Horizontal" /> <Setter Property="VerticalAlignment" Value="Center"/> <Setter Property="HorizontalAlignment" Value="Center"/> </Style> <!--In the app.xaml--> <Style TargetType="StackPanel" BasedOn="{StaticResource StackPanelStyle}"/> <!--In the window/page scope--> <Style TargetType="StackPanel" BasedOn="{StaticResource StackPanelStyle}"/ ``` But I am looking for better stuff than stupidly redeclare all the styles.

Original source