Ms Chart 主副座標

chart1.Series.Add("Value");
chart1.Series["Value"].YAxisType = AxisType.Primary;
chart1.Series["Value"].ChartType = SeriesChartType.FastLine;

chart1.Series.Add("Temp");
chart1.Series["Temp"].YAxisType = AxisType.Secondary;
chart1.Series["Temp"].ChartType = SeriesChartType.FastLine;

chart1.ChartAreas[0].AxisY2.Enabled = AxisEnabled.True;

效果：