<Rectangle Margin="0,0,0,0"> <Rectangle.Fill> <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1"> <GradientStop Color="DarkBlue" Offset="0.3" /> <GradientStop Color="SlateBlue" Offset="0.7" /> </LinearGradientBrush> </Rectangle.Fill> </Rectangle>
<Grid.Resources> <Style x:Key="myRectangleStyle" TargetType="Rectangle"> <Setter Property="Margin" Value="0,0,0,0" /> <Setter Property="Fill"> <Setter.Value> <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1"> <GradientStop Color="DarkBlue" Offset="0.3" /> <GradientStop Color="SlateBlue" Offset="0.7" /> </LinearGradientBrush> </Setter.Value> </Setter> </Style> </Grid.Resources> <Rectangle Style="{StaticResource myRectangleStyle} />