<Button Grid.Column="1"
Style="{Binding SearchButtonStyle, ElementName=UC}"
Background="Transparent"
Foreground="{Binding ElementName=UC, Path=Foreground}"
FontSize="{Binding ElementName=UC, Path=FontSize}"
BorderThickness="0"
Content=""
FontFamily="{StaticResource FontAwesome}"
Width="{Binding ActualHeight, RelativeSource={RelativeSource Self}}">
<Button.Template>
<ControlTemplate TargetType="{x:Type ButtonBase}">
<Border x:Name="border" Background="{TemplateBinding Background}">