void chart_ShowTooltip(object sender, ShowTooltipEventArgs e) { if (sender is ChartDataSeries) { ChartDataSeries cds = (ChartDataSeries)sender; e.TooltipText = (cds.Tag as List <string>)[e.PointIndex] + "\r\nRTU数量:" + cds.Y[e.PointIndex]; } }
void chart_ShowTooltip(object sender, ShowTooltipEventArgs e) { if (sender is ChartDataSeries) { ChartDataSeries ds = (ChartDataSeries)sender; object obj = ds.Tag; e.TooltipText += "\r\n" + (obj as string[])[e.PointIndex]; } }