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How to change the series selection when clicking the legend items in WPF Chart?
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You can change the Interior of a Series when its LegendItem is clicked using the MouseDown event of ChartLegend and get the series of corresponding LegendItem from the MouseButtonEventArgs.
This KB article explains how to get a Series from its corresponding LegendItem.
XAML:
<chart:SfChart.Legend>
<chart:ChartLegend MouseDown="ChartLegend_MouseDown"/>
</chart:SfChart.Legend>
C#:
public partial class MainWindow : Window
{
private ChartSeriesBase prevSeries;
private void ChartLegend_MouseDown(object sender, MouseButtonEventArgs e)
{ …
if (series != null)
{
if (prevSeries != series && prevSeries != null)
prevSeries.Interior = null;
if (series.Interior == null)
series.Interior = new SolidColorBrush(Colors.Red);
else
series.Interior = null;
prevSeries = series;
}
}
}
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