Dev ChartControl鼠标移动显示坐标点

his.chartIRC_RATES.MouseMove += new MouseEventHandler(chartIRC_RATES_MouseMove);

ToolTipController toolTipController = new ToolTipController();
        /// <summary>
        /// 鼠标显示节点坐标
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void chartIRC_RATES_MouseMove(object sender, MouseEventArgs e)
        {
            ChartHitInfo hitInfo = chartIRC_RATES.CalcHitInfo(e.Location);
            StringBuilder builder = new StringBuilder();
            if (hitInfo.SeriesPoint != null)
            {
                builder.AppendLine(" X: " + hitInfo.SeriesPoint.Argument+"D");
                builder.AppendLine(" Y: " + string.Format("{0:f4}", Convert.ToDouble(hitInfo.SeriesPoint.Values[0]) * 100) + "%");
              
            }
            toolTipController.ShowHint(builder.ToString(), chartIRC_RATES.PointToScreen(e.Location));
        }