C#中鼠标点击获取Chart图形上的坐标值

/// <summary>
        /// C#中鼠标移动获取Chart图形上的坐标值
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void chart1_GetToolTipText(object sender, System.Windows.Forms.DataVisualization.Charting.ToolTipEventArgs e)
        {
            if (e.HitTestResult.ChartElementType == ChartElementType.DataPoint)
            {
                this.Cursor = Cursors.Cross;
                int i = e.HitTestResult.PointIndex;
                System.Text.StringBuilder dpStr = new System.Text.StringBuilder();
                foreach (var item in chart1.Series)
                {
                    DataPoint dp = item.Points[i];
                    dpStr.Append(item.Name + " X:" + dp.XValue + " Y:" + dp.YValues[0] + "\r\n");
                }
                e.Text = dpStr.ToString();
            }
            else
            {
                this.Cursor = Cursors.Default;
            }
        }

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this.chart1.MouseClick += new MouseEventHandler(chart1_MouseClick);

/// <summary>
        /// C#中鼠标点击获取Chart图形上的坐标值
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void chart1_MouseClick(object sender, MouseEventArgs e)
        {
            // 获取点击位置的点的坐标
            HitTestResult result = chart1.HitTest(e.X, e.Y);
            if (result.ChartElementType == ChartElementType.DataPoint)
            {
                int index = result.PointIndex;
                DataPoint point = chart1.Series[0].Points[index];
                double xValue = point.XValue;
                double yValue = point.YValues[0];

                MessageBox.Show($"Clicked at: X = {xValue}, Y = {yValue}");
            }
        }