protected override void OnLoad(EventArgs e) { base.OnLoad(e); // new data source DataSource ds = new DataSource("PlainGraph Sample"); // new record DataRecord dr = new DataRecord("DVD"); dr.Color = Color.SkyBlue; dr.LineWeight = 2f; // line weight dr.AddData("2010", 3000); dr.AddData("2011", 3500); dr.AddData("2012", 5000); // add record ds.AddData(dr); // simple way to create record and add ds.AddData("Book", new Dictionary <string, double>() { { "2010", 2100 }, { "2011", 2700 }, { "2012", 2550 }, }).LineWeight = 3f; graph.DataSource = ds; // update data source graph.GraphType = PlainGraphType.Column; // change chart type }