<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:WpfApplication1="clr-namespace:WpfApplication1;assembly="
Title="WPF" Height="88" Width="180">
<Window.Resources>
<Style TargetType="{x:Type Button}">
<Setter Property="Background" Value="LightGray"/>
<Setter Property="FontWeight" Value="Bold"/>
</Style>
</Window.Resources>
<StackPanel Margin="4">
<Button>Implicit Style</Button>
<Button Style="{x:Null}">Ignores Style</Button>
</StackPanel>
</Window>
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