指针移动或离开chartControl时显示值

 当鼠标悬浮在图表上的某个系列点上时显示相对应的提示信息

 

 

#region 指针移动或离开时发生
        ToolTipController toolTipController = new ToolTipController();


        /// <summary>
        /// 鼠标移过组件时发生
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void chartControl1_MouseMove(object sender, MouseEventArgs e)
        {
            ChartHitInfo hitInfo = chartControl1.CalcHitInfo(e.Location);
            StringBuilder builder = new StringBuilder();

            if (hitInfo.InDiagram)
                builder.AppendLine("在图");
            if (hitInfo.InNonDefaultPane)
                builder.AppendLine("在非默认的窗格: " + hitInfo.NonDefaultPane.Name);
            if (hitInfo.InAxis)
            {
                builder.AppendLine("中抽线: " + hitInfo.Axis.Name);
                if (hitInfo.AxisLabelItem != null)
                    builder.AppendLine("标签项目: " + hitInfo.AxisLabelItem.Text);
                if (hitInfo.AxisTitle != null)
                    builder.AppendLine("抽标题: " + hitInfo.AxisTitle.Text);
            }
            if (hitInfo.InChartTitle)
                builder.AppendLine("图表标题: " + hitInfo.ChartTitle.Text);

            if (hitInfo.InLegend)
                builder.AppendLine("In legend");

            if (hitInfo.InSeries)
                builder.AppendLine("系列: " + ((Series)hitInfo.Series).Name);
            if (hitInfo.InSeriesLabel)
            {
                builder.AppendLine("系列标签");
                builder.AppendLine("系列: " + ((Series)hitInfo.Series).Name);
            }
            if (hitInfo.SeriesPoint != null)
            {
                builder.AppendLine("Argument: " + hitInfo.SeriesPoint.Argument);
                if (!hitInfo.SeriesPoint.IsEmpty)
                    builder.AppendLine("Value: " + hitInfo.SeriesPoint.Values[0]);
            }
            if (builder.Length > 0)
                toolTipController.ShowHint( builder.ToString(), chartControl1.PointToScreen(e.Location));
            else
                toolTipController.HideHint();

        }

        /// <summary>
        ///  鼠标离开组件时发生
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void chartControl1_MouseLeave(object sender, EventArgs e)
        {
            toolTipController.HideHint();
        }

        #endregion