or

<telerik:RadChart.PaletteBrushes> <LinearGradientBrush StartPoint="0,0" EndPoint="0,1"> <GradientStop Color="Red" Offset="0" /> <GradientStop Color="BlueViolet" Offset="1" /> </LinearGradientBrush></telerik:RadChart.PaletteBrushes>Appearance = new SeriesAppearanceSettings { Fill = new LinearGradientBrush(Colors.OrangeRed, Colors.Blue, 90) }<Setter Property="BackgroundStyle"> <Setter.Value> <Style TargetType="Shape"> <Setter Property="Fill"> <Setter.Value> <LinearGradientBrush StartPoint="0,0" EndPoint="0,1"> <GradientStop Color="OrangeRed" Offset="0"/> <GradientStop Color="Blue" Offset="1"/> </LinearGradientBrush> </Setter.Value> </Setter> <Setter Property="Opacity" Value="0.5" /> </Style> </Setter.Value></Setter>