Visual Studio | WPF > グラフ > LiveCharts > 凡例を表示する

動作環境

Windows 8.1 Pro (64bit)
Microsoft Visual Studio 2017 Community
Sublime Text 2

処理内容

• 凡例を表示する

実装方法

参考: Basic Line Chart @ LiveCharts

• XAML
  • lvc:CartesianChart に対して「LegendLocation」を指定する
• code behind
  • LineSeriesなどに「Title」を追加する

code

MainWindow.xaml

<Window x:Class="_171124_t1600_legend.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:_171124_t1600_legend"
        xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <StackPanel>
            <lvc:CartesianChart Series="{Binding seriesCollection}" Height="250"
                                LegendLocation="Right"/>
        </StackPanel>
    </Grid>
</Window>

MainWindow.xaml.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;
// 以下を追加
using LiveCharts;
using LiveCharts.Wpf;

namespace _171124_t1600_legend
{
    /// <summary>
    /// MainWindow.xaml の相互作用ロジック
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            graph_init();
        }

        private void graph_init()
        {
            gd = new GraphData();

            var sc = new SeriesCollection {
                new LineSeries
                {
                    Title = "pi",
                    Values = new ChartValues<double> { 3, 1, 4, 1, 5, 9, 2 }
                },
                new LineSeries
                {
                    Title = "napier",
                    Values = new ChartValues<double> { 2, 7, 1, 8, 2, 8, 1, 8 }
                }
            };

            gd.seriesCollection = sc;
            this.DataContext = gd;
        }

        GraphData gd;
        public class GraphData
        {
            public SeriesCollection seriesCollection { get; set; }
        }       
    }
}

検索用キーワード

• legend