Telerik.Reporting.Charting.ChartSeries series = new Telerik.Reporting.Charting.ChartSeries();
chart1.Series.Add(series);
series.Type=Telerik.Reporting.Charting.ChartSeriesType.Line;
series.Name = "My Series";
Telerik.Reporting.Charting.ChartSeriesItem item = new Telerik.Reporting.Charting.ChartSeriesItem();
item.XValue = 2;
item.YValue = 35;
series.AddItem(item);
item = new Telerik.Reporting.Charting.ChartSeriesItem();
item.XValue = 5;
item.YValue = 45;
series.AddItem(item);
item = new Telerik.Reporting.Charting.ChartSeriesItem();
item.XValue = 7;
item.YValue = 45;
series.AddItem(item);
item = new Telerik.Reporting.Charting.ChartSeriesItem();
item.XValue = 8;
item.YValue = 41;
series.AddItem(item);
item = new Telerik.Reporting.Charting.ChartSeriesItem();
item.XValue = 10;
item.YValue = 35;
series.AddItem(item);
series.Appearance.PointMark.Dimensions.Width = 5;
series.Appearance.PointMark.Dimensions.Height = 5;
series.Appearance.PointMark.FillStyle.MainColor =
System.Drawing.Color.Black;
series.Appearance.PointMark.Visible = true;
Thanks