set custom label in ms chart datapoint - asp.net

Question

i am using ms chart to crate graph in asp.net mvc3 !
i created the graph.
Now i want to set some text on a particular datapoint. For example at (185,90)
here is my code
public ActionResult GetGraph()
{
System.Web.UI.DataVisualization.Charting.Chart Chart2 = new System.Web.UI.DataVisualization.Charting.Chart();
Chart2.Width = 800;
Chart2.Height = 600;
var series = new Series();
series.ChartArea = "ca1";
var area = new ChartArea("ca1");
area.Area3DStyle.Enable3D = false;
area.AxisX.Title = "Height";
area.AxisX.IsStartedFromZero = true;
area.AxisX.Maximum = 200;
area.AxisX.Minimum = 110;
//area.AxisX.Interval = 10;
area.AxisY.Minimum = 10;
area.AxisY.Maximum = 110;
area.AxisY.Interval = 10;
area.AxisY.TitleFont = new Font("Arial,Helvetica,sans-serif",
10F, FontStyle.Regular);
area.AxisX.TitleFont = new Font("Arial,Helvetica,sans-serif",
10F, FontStyle.Regular);
area.AxisY.Title = "Weight";
// area.InnerPlotPosition.Height = 10;
area.AxisX.IsLabelAutoFit = false;
area.AxisY.IsLabelAutoFit = false;
new Font("Arial,Helvetica,sans-serif",
10F, FontStyle.Regular);
area.AxisY.LabelStyle.Font =
new Font("Arial,Helvetica,sans-serif",
10F, FontStyle.Regular);
area.AxisY.LineColor = Color.FromArgb(64, 64, 64, 64);
area.AxisX.LineColor = Color.FromArgb(64, 64, 64, 64);
area.AxisY.MajorGrid.LineColor = Color.FromArgb(64, 64, 64, 64);
area.AxisX.MajorGrid.LineColor = Color.FromArgb(64, 64, 64, 64);
area.Position.Auto = false;
area.Position.X = 1;
area.Position.Y = 1;
area.Position.Width = 100;
area.Position.Height = 100;
area.InnerPlotPosition.X = 10;
area.InnerPlotPosition.Y = 5;
area.InnerPlotPosition.Width = 85;
area.InnerPlotPosition.Height = 85;
Chart2.ChartAreas.Add(area);
Chart2.ChartAreas.Add("curve 15").BackColor = System.Drawing.Color.FromArgb(64, System.Drawing.Color.White);
Chart2.Series.Add("curve 15").ChartType = SeriesChartType.Line;
Chart2.Series.Add("curve 18.5").ChartType = SeriesChartType.Line;
Chart2.Series.Add("curve22").ChartType = SeriesChartType.Line;
Chart2.Series.Add("curve25").ChartType = SeriesChartType.Line;
Chart2.Series.Add("curve30").ChartType = SeriesChartType.Line;
Chart2.Series.Add("bmi30").ChartType = SeriesChartType.FastPoint;
Chart2.Series["bmi30"].Points.AddXY(185,96);
Chart2.Series["bmi30"].IsValueShownAsLabel = true;
Chart2.Series["bmi30"].Label = "BMI";
Chart2.Series["curve 15"].Color = Color.Blue;
Chart2.Series["curve 15"].BorderWidth = 2;
Chart2.Series["curve 15"].Points.AddXY(120, 21);
Chart2.Series["curve 15"].Points.AddXY(130, 25);
Chart2.Series["curve 15"].Points.AddXY(140, 27);
Chart2.Series["curve 15"].Points.AddXY(150, 32.5);
Chart2.Series["curve 15"].Points.AddXY(160, 37.5);
Chart2.Series["curve 15"].Points.AddXY(170, 42);
Chart2.Series["curve 15"].Points.AddXY(185, 48);
Chart2.Series["curve 15"].Points.Last().AxisLabel = "lllcc";
Chart2.Series["curve 18.5"].Color = Color.Red;
Chart2.Series["curve 18.5"].BorderWidth = 2;
Chart2.Series["curve 18.5"].Points.AddXY(120, 26);
Chart2.Series["curve 18.5"].Points.AddXY(130, 31);
Chart2.Series["curve 18.5"].Points.AddXY(140, 36);
Chart2.Series["curve 18.5"].Points.AddXY(150, 41);
Chart2.Series["curve 18.5"].Points.AddXY(160, 48);
Chart2.Series["curve 18.5"].Points.AddXY(170, 50.5);
Chart2.Series["curve 18.5"].Points.AddXY(185, 63);
Chart2.Series["curve22"].Color = Color.Chocolate;
Chart2.Series["curve22"].BorderWidth = 2;
Chart2.Series["curve22"].Points.AddXY(120, 30.5);
Chart2.Series["curve22"].Points.AddXY(130,36);
Chart2.Series["curve22"].Points.AddXY(140, 42);
Chart2.Series["curve22"].Points.AddXY(150,49);
Chart2.Series["curve22"].Points.AddXY(160, 51);
Chart2.Series["curve22"].Points.AddXY(170, 61);
Chart2.Series["curve22"].Points.AddXY(185,71);
Chart2.Series["curve25"].Color = Color.Yellow;
Chart2.Series["curve25"].BorderWidth = 2;
Chart2.Series["curve25"].Points.AddXY(120,36);
Chart2.Series["curve25"].Points.AddXY(130, 41);
Chart2.Series["curve25"].Points.AddXY(140,48.5);
Chart2.Series["curve25"].Points.AddXY(150,56);
Chart2.Series["curve25"].Points.AddXY(160,58);
Chart2.Series["curve25"].Points.AddXY(170,71);
Chart2.Series["curve25"].Points.AddXY(185,81);
Chart2.Series["curve30"].Color = Color.Green;
Chart2.Series["curve30"].BorderWidth = 2;
Chart2.Series["curve30"].Points.AddXY(120, 42);
Chart2.Series["curve30"].Points.AddXY(130, 50);
Chart2.Series["curve30"].Points.AddXY(140, 58);
Chart2.Series["curve30"].Points.AddXY(150, 66);
Chart2.Series["curve30"].Points.AddXY(160, 76);
Chart2.Series["curve30"].Points.AddXY(170, 85);
Chart2.Series["curve30"].Points.AddXY(185, 96);
Chart2.BackColor = Color.Transparent;
MemoryStream imageStream = new MemoryStream();
Chart2.SaveImage(imageStream, ChartImageFormat.Png);
Chart2.TextAntiAliasingQuality = TextAntiAliasingQuality.SystemDefault;
Response.ContentType = "image/png";
imageStream.WriteTo(Response.OutputStream);
return PartialView("_GetGraph");
}
i tried using the link
Adding text , image to asp.net chart control
but the label is not showing.
also i want to start x with 0,120,130,...
and y axes to 0,20,30
is it possible? any help appericiated

Answer 1

You should first create a datapoint and then add it to the series. For example:
DataPoint dp = new DataPoint();
dp4.Font = dp_font;
dp4.XValue = 185;
dp4.SetValueY(90);
dp4.Label = "Label text";
Series["bmi30"].Points.Add(dp)