Border in silverlight
<Border BorderBrush="Pink" BorderThickness="5" CornerRadius="5" >
<Grid>
<ScrollViewer>
<StackPanel Orientation="Vertical">
<StackPanel>
<Grid x:Name="LayoutRoot" Width="1000" Height="100" VerticalAlignment="Top">
<Grid.Background>
<LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
<GradientStop Color="SkyBlue" Offset="0"/>
<GradientStop Color="White" Offset="0.75"/>
<GradientStop Color="SkyBlue" Offset="1"/>
</LinearGradientBrush>
</Grid.Background>
</Grid>
</StackPanel>
</StackPanel>
</ScrollViewer>
</Grid>
</Border>