MSChart-Range Chart with X-value

Question

Hi all,
I would like to create a range chart using MSchart, i know how to create the chart by just using the Y value as shown below:

            chart1.Series["Series1"].ChartType = SeriesChartType.Range;
            chart1.Series["Series1"].Points.DataBindY(upper, lower); //upper & lower are arrays

However, I can't figure out how to create the range chart by having X-axis value (x-axis is datetime value), does anyone know how to create the range chart with X & Y values? Thanks.