How to share wpf style setter - wpf

Question

I have the following ResourceDictionary:
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Style x:Key="StyleComboBox" TargetType="{x:Type ComboBox}">
<Setter Property="BorderBrush" Value="DarkGray" />
<Setter Property="BorderThickness" Value="1" />
<!-- Styles for ComboBox -->
</Style>
<Style x:Key="StyleTextBox" TargetType="{x:Type TextBox}">
<Setter Property="BorderBrush" Value="DarkGray" />
<Setter Property="BorderThickness" Value="1" />
<!-- Styles for Textbox -->
</Style>
</ResourceDictionary>
How is it possible to use only at one position the setter?

Answer 1

Styles in wpf can be inherited from another style.
<Style x:Key="baseStyle" TargetType="TextBlock">
<Setter Property="FontSize" Value="12" />
<Setter Property="Background" Value="Orange" />
</Style>
<Style x:Key="boldStyle" BasedOn="{StaticResource baseStyle}" TargetType="TextBlock">
<Setter Property="FontWeight" Value="Bold" />
</Style>
source
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Style x:Key="baseStyle" TargetType="Control">
<Setter Property="BorderBrush" Value="DarkGray" />
<Setter Property="BorderThickness" Value="1" />
</Style>
<Style x:Key="StyleComboBox" BasedOn="{StaticResource baseStyle}" TargetType="{x:Type ComboBox}">
<!-- Styles for ComboBox -->
</Style>
<Style x:Key="StyleTextBox" BasedOn="{StaticResource baseStyle}" TargetType="{x:Type TextBox}">
<!-- Styles for Textbox -->
</Style>
</ResourceDictionary>

Answer 2

<Style TargetType="Control" x:Key="Controlbase">
<Setter Property="Control.BorderThickness" Value="10"/>
</Style>
<Style x:Key="StyleComboBox" TargetType="{x:Type ComboBox}" BasedOn="{StaticResource Controlbase}">
<Setter Property="BorderBrush" Value="DarkGray" />
<!-- Styles for ComboBox -->
</Style>
<Style x:Key="StyleTextBox" TargetType="{x:Type TextBox}" BasedOn="{StaticResource Controlbase}">
<Setter Property="BorderBrush" Value="DarkGray" />
<!-- Styles for Textbox -->
</Style>
I hope this will help.

Answer 3

Curious if this worked for you. Need to be careful in that you're redefining the style of say a ComboBox as based on your Control base style. Presumably the control template is not affected by this as that would be bad. IOW A ComboBox is much more than just a simple control and needs to inherit the styles and preserve the control template of all that it means to be a ComboBox. IE Its a SelectorControl that inherits from an ItemsControl etc.
I wonder if rebasing its style would also cause it to prefer/use the default control template of a Control rather than retaining its "identity" as say a ComboBox.