Style each item of a bar chart

[dpl]

Hi all,

looks like a simple problem, but I can't find a solution :-(  I have a bar chart with several items and a CustomGridLine, showing a limit value. Now I want to fill each item depending on his value. Green, if it is far away from the limit, yellow if near by and red if it is greater. Best solution will be a linear brush to fade the colors. Any hints?

[dpl]

I solved the problem :-)  The trick is to put the background in a property of the class for a single item. Then you can override the style and bind the background with the property.

<Style x:Key="CustomBarStyle" TargetType="charting:Bar">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="charting:Bar">
                <Canvas>
                    <Rectangle
                            x:Name="PART_DefiningGeometry"
                            Height="{TemplateBinding ItemActualHeight}"
                            Width="{TemplateBinding ItemActualWidth}"
                            Fill="{Binding DataItem.BackgroundBrush}" />
                    <Canvas.RenderTransform>
                        <ScaleTransform x:Name="PART_AnimationTransform" ScaleY="0" />
                    </Canvas.RenderTransform>
                </Canvas>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>