Q:

Duplication in XAML styles

I have xaml styles that have different target types but are otherwise identical.  Is there a way I could cut out the duplication and define the style only once? 
<Style TargetType="TextBlock">            
    <Setter Property="Height" Value="{StaticResource ElementHeight}"/>
    <Setter Property="MinWidth" Value="{StaticResource ElementMinWidth}"/>
    <Setter Property="Margin" Value="{StaticResource ElementMargin}"/>
</Style>

<Style TargetType="TextBox">
    <Setter Property="Height" Value="{StaticResource ElementHeight}"/>
    <Setter Property="MinWidth" Value="{StaticResource ElementMinWidth}"/>
    <Setter Property="Margin" Value="{StaticResource ElementMargin}"/>
</Style>

<Style TargetType="ComboBox">
    <Setter Property="Height" Value="{StaticResource ElementHeight}"/>
    <Setter Property="MinWidth" Value="{StaticResource ElementMinWidth}"/>
    <Setter Property="Margin" Value="{StaticResource ElementMargin}"/>
</Style>

A:

You could use style inheritance with the help of Style. BasedOn. 
First define the base style:
   <Style x:Key="BaseStyle" TargetType="FrameworkElement">
        <Setter Property="Height" Value="80"/>
        <Setter Property="MinWidth" Value="80"/>
        <Setter Property="Margin" Value="80"/>
    </Style>

Then "inherit" styles from that for the controls you want:
    <Style TargetType="TextBlock" BasedOn="{StaticResource BaseStyle}"/>
    <Style TargetType="TextBox" BasedOn="{StaticResource BaseStyle}"/>
    <Style TargetType="ComboBox" BasedOn="{StaticResource BaseStyle}"/>

