Find the color of my serie when use of Z-Index

[Vinc3nt]

Hi,

I have define a PointTemplate wich create a white ellipse filled with the color of the serie.
When I don't use Z-Index to put the Bar Serie and Area Serie behind, I can find easily the color of the serie (the index of the serie equals to the index of the color in palette) .
But when I use Z-Index, the series' order is different so I can't find my color.

Is there a way to find the color use by the serie without using the index ?

Thank you in advance,
Vincent

[Petar Kirov]

Hi Vincent,

RadChartView takes colors from its palette in same order as its series appear in the chart.Series collection (independent from their .ZIndex values). This means that you can use a converter for the ellipse fill like this:

<DataTemplate>
    <Ellipse Width="5" Height="5" Fill="{Binding Converter={StaticResource PaletteConveter}}"/>
</DataTemplate>

public class PaletteConveter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        var dp = value as DataPoint;

        var series = (dp.Presenter as CartesianSeries);

        var chart = series.ParentOfType<RadCartesianChart>();

        var palette = chart.Palette;

        int seriesIndex = chart.Series.IndexOf(series);
        int paletteColorsCount = palette.GlobalEntries.Count;

        var brush = palette.GlobalEntries[seriesIndex % paletteColorsCount].Fill;

        return brush;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

I hope this helps.
 
Regards,
Petar Kirov
Telerik