I am beginner in WPF and use this book http://apress.com/book/view/1430272058 I came to the champter 2 and threre is Attached Properties explanation but I couldn't understand very well there is this example:
<Grid> <TextBox Height="23" HorizontalAlignment="Left" Margin="104,103,0,0" Name="textBox1" VerticalAlignment="Top" Width="120" Grid.Row="0"/> <TextBox Height="23" HorizontalAlignment="Left" Margin="104,189,0,0" Name="textBox2" VerticalAlignment="Top" Width="120" Grid.Row="1"/> </Grid>