<UserControl x:Class="PostSharp.Samples.Xaml.FancyTextBlock" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:local="clr-namespace:PostSharp.Samples.Xaml" mc:Ignorable="d"> <Border BorderThickness="3" Padding="5" DataContext="{Binding RelativeSource={RelativeSource AncestorType=local:FancyTextBlock}}"> <Border.BorderBrush> <RadialGradientBrush> <GradientStop Color="Yellow" Offset="0" /> <GradientStop Color="Red" Offset="1" /> </RadialGradientBrush> </Border.BorderBrush> <TextBlock Text="{Binding Path=Text, FallbackValue='Hello, world'}" /> </Border> </UserControl>