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How to customize the icons of legends in WPF Chart (SfChart)?
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You can customize the label and icon of legends by using the Label and LegendIcon properties in WPF Chart (SfChart). The LegendIcon property is an enum property that holding the values like rectangle, circle, cross, etc.
Also, you can make the legend icon as thumbnail for series shapes by choosing the SeriesType as value for the LegendIcon property.
XAML
<syncfusion:SfChart.Legend> <syncfusion:ChartLegend/> </syncfusion:SfChart.Legend> <!--LegendIcon is set "SeriesType"--> <syncfusion:LineSeries LegendIcon="SeriesType" Label="Series1" ItemsSource="{Binding Computers}" XBindingPath="Computer" YBindingPath="Year2013"/>
C#
this.sampleChart.Series[0].LegendIcon = ChartLegendIcon.SeriesType;