Here is the link that will give you more details on dynamically creating ChartText Collection and setting properties:
 
<http://help.infragistics.com/NetAdvantage/ASPNET/2010.2/?page=Chart_Apply_Chart_Text_Labels.html>

Refer to the code on above link. You can add ChartText to other types of chart also.

Please let me know if you have any further questions with this matter.

Thanks,

Bhadresh

I followed the "getting started" topic in the help to come up with this code behind for creating the data (just as an example).

        protected void Page_Load(object sender, EventArgs e)
        {
            this.UltraChart1.DataSource = GetColumnData();
            this.UltraChart1.DataBind();
        }

        private DataTable GetColumnData()
        {
            DataTable mydata = new DataTable();

            mydata.Columns.Add("Series Labels", typeof(string));
            mydata.Columns.Add("XValue", typeof(int));
            mydata.Columns.Add("YValue", typeof(int));

            mydata.Rows.Add(new Object[] { "Mercury", 5, 20 });
            mydata.Rows.Add(new Object[] { "Venus", 10, 20 });
            mydata.Rows.Add(new Object[] { "Earth", 15, 20 });
            mydata.Rows.Add(new Object[] { "Mars", 20, 20 });

            return mydata;
        }

Then I did what Swetha suggested.  I set the Column value differently each time, but I'm not sure that it matters.  Setting the Visible property on each item might be the key.  Here's how it appeared in the .aspx page.

            <ChartText>
                <igchartprop:ChartTextAppearance ChartTextFont="Arial, 7pt" Column="0"
                    ItemFormatString="Mercury" Row="0" Visible="True" />
                <igchartprop:ChartTextAppearance ChartTextFont="Arial, 7pt" Column="10"
                    ItemFormatString="Venus" Row="1" Visible="True" />
                <igchartprop:ChartTextAppearance ChartTextFont="Arial, 7pt" Column="15"
                    ItemFormatString="Earth" Row="2" Visible="True" />
                <igchartprop:ChartTextAppearance ChartTextFont="Arial, 7pt" Column="20"
                    ItemFormatString="Mars" Row="3" Visible="True" />
            </ChartText>

I hope that information helps you with setting it in the code behind.

I have attached a screenshot.  I can upload my sample project if you'd like, but I simply explored the designer and property windows.

Elizabeth Albert
Localization Engineer