WPF利用LiveCharts实现动态曲线图绘制

<lvc:CartesianChart>
<lvc:CartesianChart.Series>
      <!--设置Series的类型为 Line 类型, 该类型提供了一些折线图的实现-->
    <lvc:LineSeries/>  
</lvc:CartesianChart.Series>
</lvc:CartesianChart>

<lvc:CartesianChart>
 <lvc:CartesianChart.Series>
     <!--设置Series的类型为 Line 类型, 该类型提供了一些折线图的实现-->
     <lvc:LineSeries Values="1,2,3,4,5,6"/>
     <lvc:LineSeries Values="2,4,6,8,10,12"/>
 </lvc:CartesianChart.Series>
</lvc:CartesianChart>

<Window x:Class="WpfApplication7.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
        Title="MainWindow" Width="700" Height="400" Loaded="Window_Loaded" >
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="50"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <Grid Grid.Row="0" Background="AntiqueWhite">
            <Button Content="测试"  Margin="0,10,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Click="Button_Click"/>
        </Grid>
        <Grid Grid.Row="1">
            <lvc:CartesianChart Series="{Binding LineSeriesCollection}" LegendLocation="Right">
                <lvc:CartesianChart.AxisX>
                    <lvc:Axis LabelFormatter="{Binding CustomFormatterX}"  MaxValue="{Binding AxisXMax}" MinValue="{Binding AxisXMin}">
                        <lvc:Axis.Separator>
                            <lvc:Separator Step="1" />
                        </lvc:Axis.Separator>
                    </lvc:Axis>
                </lvc:CartesianChart.AxisX>
                <lvc:CartesianChart.AxisY>
                    <lvc:Axis LabelFormatter="{Binding CustomFormatterY}" MaxValue="{Binding AxisYMax}" MinValue="{Binding AxisYMin}">
                    </lvc:Axis>
                </lvc:CartesianChart.AxisY>
            </lvc:CartesianChart>
        </Grid>
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace WpfApplication7
{
    /// <summary>
    /// 实现了属性更改通知的基类
    /// </summary>
    public class ViewModelBase : System.ComponentModel.INotifyPropertyChanged
    {
        public virtual event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
        /// <summary>
        /// 属性值变化时发生
        /// </summary>
        /// <param name="propertyName"></param>
        protected virtual void OnPropertyChanged(string propertyName)
        {
            if (this.PropertyChanged != null)
                this.PropertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
        }
        /// <summary>
        /// 属性值变化时发生
        /// </summary>
        /// <param name="propertyName"></param>
        protected virtual void OnPropertyChanged<T>(System.Linq.Expressions.Expression<Func<T>> propertyExpression)
        {
            var propertyName = (propertyExpression.Body as System.Linq.Expressions.MemberExpression).Member.Name;
            this.OnPropertyChanged(propertyName);
        }
    }
}

using LiveCharts;
using LiveCharts.Wpf;
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;
namespace WpfApplication7
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        private Mode Modes = new Mode();
        public MainWindow()
        {
            InitializeComponent();
        }
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            this.DataContext = Modes;
        }
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            Modes.OnClick();
        }
    }
    public class Mode : ViewModelBase
    {
        public SeriesCollection LineSeriesCollection { get; set; }
        private double axisXMax;
        public double AxisXMax
        {
            get { return axisXMax; }
            set { axisXMax = value; this.OnPropertyChanged("AxisXMax"); }
        }
        private double axisXMin;
        public double AxisXMin
        {
            get { return axisXMin; }
            set { axisXMin = value; this.OnPropertyChanged("AxisXMin"); }
        }
        private double axisYMax;
        public double AxisYMax
        {
            get { return axisYMax; }
            set { axisYMax = value; this.OnPropertyChanged("AxisYMax"); }
        }
        private double axisYMin;
        public double AxisYMin
        {
            get { return axisYMin; }
            set { axisYMin = value; this.OnPropertyChanged("AxisYMin"); }
        }
        private Random Randoms = new Random();
        public Func<double, string> CustomFormatterX { get; set; }
        public Func<double, string> CustomFormatterY { get; set; }
        //绑定的X轴数据
        private ChartValues<double> ValueList { get; set; }
        //表中最大容纳个数
        private int TabelShowCount = 10;
        private string CustomFormattersX(double val)
        {
            return string.Format("{0}天", val);
        }
        private string CustomFormattersY(double val)
        {
            return string.Format("{0}公斤", val);
        }
        public void OnClick()
        {
            int yValue = Randoms.Next(2, 1000);
            //向图表中添加数据
            ValueList.Add(yValue);
            //确保Y轴曲线不会超过图表
            int maxY = (int)ValueList.Max();
            AxisYMax = maxY + 30;
            //Y轴保持数据居中（曲线会上下晃动）
            //int minY = ValueList.Count == 1 ? 0 : (int)ValueList.Min();
            //AxisYMin = minY - 10;
            //y轴的设置
            if (ValueList.Count > TabelShowCount)
            {
                AxisXMax = ValueList.Count - 1;
                AxisXMin = ValueList.Count - TabelShowCount;
            }
            //这里如果移除数组，图表曲线会原地起伏，就没有X轴移动的动画效果了
            //if (ValueList.Count > 20)
            //{
            //    ValueList.RemoveAt(0);
            //}
        }
        public Mode()
        {
            AxisXMax = 10;
            AxisXMin = 0;
            AxisYMax = 10;
            AxisYMin = 0;
            ValueList = new ChartValues<double>();
            LineSeriesCollection = new SeriesCollection();
            CustomFormatterX = CustomFormattersX;
            CustomFormatterY = CustomFormattersY;
            LineSeries lineseries = new LineSeries();
            lineseries.DataLabels = true;
            lineseries.Values = ValueList;
            LineSeriesCollection.Add(lineseries);
        }
    }
}