c#如何在点击时从图表中获取点数据？

using System;
using System.Windows.Forms;
using ChartJs.Blazor.ChartJS.Common;
using ChartJs.Blazor.ChartJS.LineChart;
using ChartJs.Blazor.ChartJS.LineChart.Axes;
using ChartJs.Blazor.ChartJS.LineChart.Axes.Ticks;
using ChartJs.Blazor.ChartJS.LineChart.Dataset;
using ChartJs.Blazor.ChartJS.LineChart.Options;
using ChartJs.Blazor.Util;

namespace ChartExample
{
    public partial class MainForm : Form
    {
        private LineConfig _lineConfig;

        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            // 创建图表配置
            _lineConfig = new LineConfig
            {
                Options = new LineOptions
                {
                    Responsive = true,
                    Scales = new LineScales
                    {
                        XAxes = new[]
                        {
                            new CartesianAxis
                            {
                                Ticks = new CartesianLinearTicks
                                {
                                    BeginAtZero = true
                                }
                            }
                        },
                        YAxes = new[]
                        {
                            new CartesianAxis
                            {
                                Ticks = new CartesianLinearTicks
                                {
                                    BeginAtZero = true
                                }
                            }
                        }
                    }
                }
            };

            // 添加示例数据
            _lineConfig.Data.Labels.AddRange(new[] { "A", "B", "C", "D", "E" });
            _lineConfig.Data.Datasets.Add(new LineDataset<int>
            {
                Label = "Data",
                Data = new[] { 10, 20, 30, 40, 50 },
                BackgroundColor = ColorUtil.FromDrawingColor(System.Drawing.Color.Blue),
                BorderColor = ColorUtil.FromDrawingColor(System.Drawing.Color.Blue),
                Fill = FillingMode.Disabled
            });

            // 创建图表
            var chart = new LineChartJs { Config = _lineConfig };
            chart.Location = new System.Drawing.Point(10, 10);
            chart.Size = new System.Drawing.Size(400, 300);
            Controls.Add(chart);

            // 添加点击事件处理程序
            chart.Click += Chart_Click;
        }

        private void Chart_Click(object sender, ChartClickEventArgs e)
        {
            // 获取点击位置的索引
            var index = e.DataIndex;

            // 获取点击位置的数据点
            var dataPoint = _lineConfig.Data.Datasets[0].Data[index];

            // 在控制台输出数据点的值
            Console.WriteLine($"Clicked data point: {dataPoint}");
        }
    }
}