Series Title
You can add an individual title for Pie series views.
Specify the PieSeriesView.Title property to add a title for the series:
<Charts:PieChart x:Name="chart">
<Charts:PieChart.Series>
<Charts:PieSeries x:Name="series">
<Charts:PieSeries.View>
<Charts:PieSeriesView Title="2001">
<Charts:PieSeriesView.TitleContentTemplate>
<DataTemplate>
<TextBlock Margin="10" Text="{Binding}"/>
</DataTemplate>
</Charts:PieSeriesView.TitleContentTemplate>
</Charts:PieSeriesView>
</Charts:PieSeries.View>
<Charts:PieSeries.Data>
<!--...-->
</Charts:PieSeries.Data>
</Charts:PieSeries>
</Charts:PieChart.Series>
</Charts:PieChart