Applying a style to all derived classes in WPF - wpf

Question

I want to apply a style to all classes derived from Control. Is this possible with WPF?
The following example does not work. I want the Label, TextBox and Button to have a Margin of 4.
<Window x:Class="WeatherInfo.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Wetterbericht" Height="300" Width="300">
<Window.Resources>
<Style TargetType="Control">
<Setter Property="Margin" Value="4"/>
</Style>
</Window.Resources>
<Grid>
<StackPanel Margin="4" HorizontalAlignment="Left">
<Label>Zipcode</Label>
<TextBox Name="Zipcode"></TextBox>
<Button>get weather info</Button>
</StackPanel>
</Grid>
</Window>

Answer 1

Here's one solution:
<Window.Resources>
<Style TargetType="Control" x:Key="BaseStyle">
<Setter Property="Margin" Value="4"/>
</Style>
<Style BasedOn="{StaticResource BaseStyle}" TargetType="Button" />
<Style BasedOn="{StaticResource BaseStyle}" TargetType="Label" />
<Style BasedOn="{StaticResource BaseStyle}" TargetType="TextBox" />
</Window.Resources>
<Grid>
<StackPanel Margin="4" HorizontalAlignment="Left">
<Label>Zipcode</Label>
<TextBox Name="Zipcode"></TextBox>
<Button>get weather info</Button>
</StackPanel>
</Grid>

Answer 2

This is not possible in WPF. You have a couple of options to help you out:
Create one style based on another by using the BasedOn attribute.
Move the common information (margin, in this case) into a resource and reference that resource from each style you create.
Example of 1
<Style TargetType="Control">
<Setter Property="Margin" Value="4"/>
</Style>
<Style TargetType="TextBox" BasedOn="{StaticResource {x:Type Control}}">
</Style>
Example of 2
<Thickness x:Key="MarginSize">4</Thickness>
<Style TargetType="TextBox">
<Setter Property="Margin" Value="{StaticResource MarginSize}"/>
</Style>