Fine tune column chart asp.net c#

    protected void Page_Load(object sender, EventArgs e)
    {
            var chartImage = new Chart();
            chartImage.Width = 600;
            chartImage.Height = 400;

            //chartImage.Titles.Add("Sample Chart");
            chartImage.Series.Add("Decade");
           // chartImage.Legends.Add(chartImage.Series[0].Name); // optional, show legend

            // add data points
            object[] xValue = { "1970", "1980", "1990", "2000", "2010" };
            object[] yValues = { "9", "22", "52", "89", "123" };
            for (int x = 0; x < xValue.Length; x++) {
                chartImage.Series[0].Points.AddXY(xValue[x], yValues[x]);} // may need to cast to double, if "option strict"
 
            chartImage.ChartAreas.Add("chartArea0"); // always need to add this
            chartImage.ChartAreas[0].AxisX.Title = "Decade"; // optional, show axis x title
           // chartImage.ChartAreas[0].AxisY.Title = "Incidence"; // optional, show axis y title
            chartImage.ChartAreas[0].AxisX.LabelStyle.Angle = 90;
            chartImage.ImageStorageMode = ImageStorageMode.UseImageLocation; // avoid having to define http handler for now, simpler for quick testing
            this.Controls.Add(chartImage); // add to page for automatic rendering
        }

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