后台

using System;
using System.Windows.Controls;
using LiveCharts;
using LiveCharts.Wpf;namespace Wpf.PieChart
{public partial class PieChartExample : UserControl{public PieChartExample(){InitializeComponent();PointLabel = chartPoint =>string.Format("{0} ({1:P})", chartPoint.Y, chartPoint.Participation);DataContext = this;}public Func<ChartPoint, string> PointLabel { get; set; }private void Chart_OnDataClick(object sender, ChartPoint chartpoint){var chart = (LiveCharts.Wpf.PieChart) chartpoint.ChartView;//clear selected slice.foreach (PieSeries series in chart.Series)series.PushOut = 0;var selectedSeries = (PieSeries) chartpoint.SeriesView;selectedSeries.PushOut = 8;}}
}

前台

<UserControl x:Class="Wpf.PieChart.PieChartExample"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:local="clr-namespace:Wpf.PieChart"xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="500" d:DataContext="{d:DesignInstance local:PieChartExample}"><Grid><lvc:PieChart LegendLocation="Bottom" DataClick="Chart_OnDataClick" Hoverable="False" DataTooltip="{x:Null}"><lvc:PieChart.Series><lvc:PieSeries Title="Maria" Values="3" DataLabels="True"LabelPoint="{Binding PointLabel}"/><lvc:PieSeries Title="Charles" Values="4" DataLabels="True" LabelPoint="{Binding PointLabel}"/><lvc:PieSeries Title="Frida" Values="6" DataLabels="True" LabelPoint="{Binding PointLabel}"/><lvc:PieSeries Title="Frederic" Values="2" DataLabels="True" LabelPoint="{Binding PointLabel}"/></lvc:PieChart.Series></lvc:PieChart>  </Grid>
</UserControl>