Winform（C#）中Chart控制項滑鼠點擊顯示波形上相應點對應坐標軸的x，y值

方法一：滑鼠點擊波形

滑鼠點擊波形，顯示點擊位置的x，y值

private void chart1_MouseClick(object sender, MouseEventArgs e)  //chart1是你建的chart控制項，實際名字根據你自己代碼里的命名
        {            
            HitTestResult hit = chart1.HitTest(e.X, e.Y);
            if (hit.Series != null)
            {
                var xValue = hit.Series.Points[hit.PointIndex].XValue;
                var yValue = hit.Series.Points[hit.PointIndex].YValues.First();
                textBox1.Text = string.Format("{0:F0},{1:F0}", "x:"+xValue, "y:"+yValue);//textbox1也是自己建的一個專門用來顯示的內容框，也可以用messagebox直接彈出內容
            }
            else
            {
                textBox1.Text="未點擊到波形曲線";
            }
        }

調用方法：

chart1.MouseClick += new MouseEventHandler(chart1_MouseClick);

方法二：滑鼠移動到相應點位自動顯示相關數值

private void chart1_MouseMove(object sender, MouseEventArgs e)
        {
            var area = chart1.ChartAreas[0];

            double xValue = area.AxisX.PixelPositionToValue(e.X);
            double yValue = area.AxisY.PixelPositionToValue(e.Y);
            textBox1.Text = string.Format("{0:F0},{1:F0}", xValue, yValue);
        }

調用方法：

chart1.MouseMove += new MouseEventHandler(chart1_MouseMove);