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效果预览

效果预览（更多效果请下载源码体验）：

一、PieControl.cs 代码如下

using System.Collections.ObjectModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using WpfPieControl.Models;namespace WpfPieControl
{public class PieControl: Control{public ObservableCollection<PieSegmentModel> PieSegmentModels{get { return (ObservableCollection<PieSegmentModel>)GetValue(PieSegmentModelsProperty); }set { SetValue(PieSegmentModelsProperty, value); }}public static readonly DependencyProperty PieSegmentModelsProperty =DependencyProperty.Register("PieSegmentModels", typeof(ObservableCollection<PieSegmentModel>), typeof(PieControl), new UIPropertyMetadata(OnPieSegmentModelChanged));private static void OnPieSegmentModelChanged(DependencyObject d, DependencyPropertyChangedEventArgs e){PieControl pieControl = d as PieControl;if (e.NewValue != null){var array = e.NewValue as ObservableCollection<PieSegmentModel>;double angleNum = 0;foreach (var item in array){var color = new SolidColorBrush((Color)ColorConverter.ConvertFromString(pieControl.ColorArray[array.IndexOf(item)]));item.Color = color;item.StartAngle = angleNum;item.EndAngle = angleNum + item.Value / 100 * 360;angleNum = item.EndAngle;}}}/// <summary>/// colors/// </summary>private string[] ColorArray = new string[] { "#FDC006", "#607E89", "#2095F2", "#F34336" };/// <summary>/// 0~1/// </summary>public double ArcThickness{get { return (double)GetValue(ArcThicknessProperty); }set { SetValue(ArcThicknessProperty, value); }}public static readonly DependencyProperty ArcThicknessProperty =DependencyProperty.Register("ArcThickness", typeof(double), typeof(PieControl), new PropertyMetadata(1.0));static PieControl(){DefaultStyleKeyProperty.OverrideMetadata(typeof(PieControl), new FrameworkPropertyMetadata(typeof(PieControl)));}}
}

二、App.xaml 代码如下

<Style TargetType="{x:Type local:PieControl}"><Setter Property="UseLayoutRounding" Value="True" /><!--<Setter Property="Background" Value="#252525"/>--><Setter Property="Foreground" Value="White"/><Setter Property="Width" Value="250"/><Setter Property="Height" Value="250"/><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="{x:Type local:PieControl}"><ItemsControl Width="{TemplateBinding Width}" Height="{TemplateBinding Height}" ItemsSource="{TemplateBinding PieSegmentModels}"Background="{TemplateBinding Background}"><ItemsControl.ItemsPanel><ItemsPanelTemplate><Grid IsItemsHost="True"/></ItemsPanelTemplate></ItemsControl.ItemsPanel><ItemsControl.ItemTemplate><DataTemplate><ed:Arc Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"ArcThickness="{Binding ArcThickness,RelativeSource={RelativeSource FindAncestor,AncestorType=local:PieControl}}" ArcThicknessUnit="Percent"EndAngle="{Binding EndAngle}"StartAngle="{Binding StartAngle}"Stretch="None"ToolTip="{Binding Name}"Stroke="{Binding ColorStroke}"StrokeThickness="2"Fill="{Binding Color}"></ed:Arc></DataTemplate></ItemsControl.ItemTemplate></ItemsControl></ControlTemplate></Setter.Value></Setter>
</Style>

三、MainWindow.xaml 代码如下

<Window x:Class="WpfPieControl.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:WpfPieControl"mc:Ignorable="d"Title="微信公众号：WPF开发者" Height="450" Width="800"><StackPanel><WrapPanel Margin="10"><local:PieControl PieSegmentModels="{Binding PieSegmentModels,RelativeSource={RelativeSource AncestorType=local:MainWindow}}" ArcThickness="1"/><local:PieControl PieSegmentModels="{Binding PieSegmentModels,RelativeSource={RelativeSource AncestorType=local:MainWindow}}" Margin="4,0"ArcThickness="{Binding ElementName=PRAT_Slider,Path=Value}"/><local:PieControl PieSegmentModels="{Binding PieSegmentModels,RelativeSource={RelativeSource AncestorType=local:MainWindow}}" ArcThickness="0.65"/></WrapPanel><Slider Maximum="0.9" Minimum="0.1" x:Name="PRAT_Slider" Margin="10" Width="200"/><Button Content="更新" Click="Button_Click" VerticalAlignment="Bottom" Width="200"/></StackPanel>
</Window>

四、MainWindow.xaml.cs 代码如下

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using WpfPieControl.Models;namespace WpfPieControl
{/// <summary>/// MainWindow.xaml 的交互逻辑/// </summary>public partial class MainWindow : Window{public ObservableCollection<PieSegmentModel> PieSegmentModels{get { return (ObservableCollection<PieSegmentModel>)GetValue(PieSegmentModelsProperty); }set { SetValue(PieSegmentModelsProperty, value); }}public static readonly DependencyProperty PieSegmentModelsProperty =DependencyProperty.Register("PieSegmentModels", typeof(ObservableCollection<PieSegmentModel>), typeof(MainWindow), new PropertyMetadata(null));List<ObservableCollection<PieSegmentModel>> collectionList = new List<ObservableCollection<PieSegmentModel>>();public MainWindow(){InitializeComponent();PieSegmentModels = new ObservableCollection<PieSegmentModel>();var collection1 = new ObservableCollection<PieSegmentModel>();collection1.Add(new PieSegmentModel { Name = "一", Value = 10 });collection1.Add(new PieSegmentModel { Name = "二", Value = 20 });collection1.Add(new PieSegmentModel { Name = "三", Value = 25 });collection1.Add(new PieSegmentModel { Name = "四", Value = 45 });var collection2 = new ObservableCollection<PieSegmentModel>();collection2.Add(new PieSegmentModel { Name = "一", Value = 30 });collection2.Add(new PieSegmentModel { Name = "二", Value = 15 });collection2.Add(new PieSegmentModel { Name = "三", Value = 10 });collection2.Add(new PieSegmentModel { Name = "四", Value = 55 });collectionList.AddRange(new[] { collection1, collection2 });PieSegmentModels = collectionList[0];}bool isRefresh = false;private void Button_Click(object sender, RoutedEventArgs e){if (!isRefresh)PieSegmentModels = collectionList[1];elsePieSegmentModels = collectionList[0];isRefresh = !isRefresh;}}
}

源码地址

github：https://github.com/yanjinhuagood/WPFDevelopers.git

gitee：https://gitee.com/yanjinhua/WPFDevelopers.git

WPF开发者QQ群： 340500857

blogs： https://www.cnblogs.com/yanjinhua

Github：https://github.com/yanjinhuagood

出处：https://www.cnblogs.com/yanjinhua

版权：本作品采用「署名-非商业性使用-相同方式共享 4.0 国际」许可协议进行许可。

转载请著名作者 出处 https://github.com/yanjinhuagood