Silverlight XAML Primer 5, Listing 1
Using the LinearGradientBrush to create a gradient within a rectangle.
<Canvas xmlns="http://schemas.microsoft.com/client/2007">
<Ellipse Width="500" Height="500">
<Ellipse.Fill>
<RadialGradientBrush GradientOrigin="0.5,0.5" Center="0.5,0.5"
RadiusX="0.5" RadiusY="0.5">
<GradientStop Color="Yellow" Offset="0" />
<GradientStop Color="Red" Offset="0.25" />
<GradientStop Color="Blue" Offset="0.75" />
<GradientStop Color="LimeGreen" Offset="1" />
</RadialGradientBrush>
</Ellipse.Fill>
</Ellipse>
</Canvas>