Override default styling in WPF TextBox, based on PresentationFramework.Aero

Question

I want to use the Aero textbox styling, but still override some properties. I try to accomplish this by:

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"&gt;

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="/PresentationFramework.Aero, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, ProcessorArchitecture=MSIL;component/themes/aero.normalcolor.xaml" />
    </ResourceDictionary.MergedDictionaries>

    <Style x:Key="{x:Type TextBox}" TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}">
        <Setter Property="Margin" Value="2" />
        <Setter Property="Padding" Value="2" />
    </Style>
</ResourceDictionary>

However, this results in a StackOverflowException when starting my app. When I remove the reference to PresentationFramework.Aero, this works but I get the default OS styling, which makes the app ugly. ;)

So, in effect: if I want to override some style on all my textboxes I cannot get the Aero look. If I want the Aero look, I cannot override any styling. Deadlock.

Any way to solve this?

Answer 1

It seems to work if you put the Style as a lower-level resource, instead of in the same ResourceDictionary:

<Grid xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"&gt;
    <Grid.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/PresentationFramework.Aero, Version=3.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35, ProcessorArchitecture=MSIL;component/themes/aero.normalcolor.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Grid.Resources>
    <Border BorderBrush="Blue" BorderThickness="3">
        <Border.Resources>
            <Style TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}">
                <Setter Property="Margin" Value="2" />
                <Setter Property="Padding" Value="2" />
            </Style>
        </Border.Resources>
        <TextBox />
    </Border>
</Grid>