WPF开发中经常需要绘制曲线、直方图等。虽然WPF自带了绘制图形等基础功能，但做程序一个很基础的原则就是避免重复造轮子。在GitHub上找到了微软官方的WPF绘制曲线开源库：InteractiveDataDisplay.WPF。
我使用的IDE是VS201x，建议使用NuGet安装--引用InteractiveDataDisplay.WPF。如何使用NuGet，请自行百度。
以下是我实验的该开源库绘制的WPF曲线程序。

MainWindow.xaml

<Window x:Class="WpfDrawPlot.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d3="clr-namespace:InteractiveDataDisplay.WPF;assembly=InteractiveDataDisplay.WPF" Title="MainWindow" Height="600" Width="800"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="*"/> <RowDefinition Height="*"/> </Grid.RowDefinitions> <!-- BarGraph --> <d3:Chart Grid.Row="0"> <d3:Chart.Title> <TextBlock Text="WPF Bar Chart" HorizontalAlignment="Center" FontSize="18" Margin="0, 5"/> </d3:Chart.Title> <d3:BarGraph x:Name="BarChart" Description="BarChart" Stroke="Red" StrokeThickness="1"/> </d3:Chart> <!-- LineGraph --> <d3:Chart x:Name="LinePlot" Grid.Row="1"> <d3:Chart.Title> <TextBlock Text="WPF Line Chart" HorizontalAlignment="Center" FontSize="18" Margin="0, 5"/> </d3:Chart.Title> <d3:LineGraph x:Name="LineChart" Description="LineChart" Stroke="Green" StrokeThickness="1"/> </d3:Chart> </Grid></Window>

MainWindow.cs

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;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 System.Threading;using InteractiveDataDisplay.WPF;namespace WpfDrawPlot{ /// <summary> /// MainWindow.xaml 的交互逻辑 /// </summary> public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); //线程中更新曲线 Thread threadTmp = new Thread( UpdateChart ); threadTmp.Start(); } private void UpdateChart() { int nPointNum = 100; Random randm = new Random(); double[] dArray = new double[ nPointNum ]; double[] dX = new double[ nPointNum ]; double[] dY = new double[ nPointNum ]; double dRandomtTmp = 0; while( true ) { Thread.Sleep( 1000 );//每秒刷新一次 for ( int n = 0; n < dArray.Length; n++ ) { dRandomtTmp = randm.NextDouble(); dArray[ n ] = ( dRandomtTmp < 0.5 ) ? -dRandomtTmp * dArray.Length : dRandomtTmp * dArray.Length; } for ( int n = 0; n < dX.Length; n++ ) { dX[ n ] = n; dY[ n ] = randm.Next( dX.Length ); } //更新UI Dispatcher.Invoke( new Action( delegate { this.BarChart.PlotBars( dArray ); this.LineChart.Plot( dX, dY ); } ) ); } } }}效果