How to change default series Name / LegendText with column name for Column chart using C# in ASP.Net

Dear All,

I would like to change the default legend "Series1, Series2.." with the proper values:

http://i67.tinypic.com/dr60c5.jpg

            if (!Page.IsPostBack)
            {
                DataTable dt = GeCharttData();
                LoadChartData(dt);
            }
            
        private void LoadChartData(DataTable initialDataSource)
        {
            for (int i = 1; i < initialDataSource.Columns.Count; i++)
            {
                Series series = new Series();

                series.IsValueShownAsLabel = true;

                foreach (DataRow dr in initialDataSource.Rows)
                {
                    int y = (int)dr[i];

                    series.Points.AddXY(dr["Data"].ToString(), y);

                    series.ChartType = SeriesChartType.Column;

                }
                ChartStatus.Series.Add(series);

                //series.Points[0].LegendText = "NySak";
                //series.Points[1].LegendText = "UnderBehandling";
                //series.Points[2].LegendText = "VenterSvar";
                //series.Points[3].LegendText = "Til Overvaking";
                //series.Points[4].LegendText = "FerdigBehandlet";
                //series.Points[5].LegendText = "Klar til raad";
                //series.Points[6].LegendText = "Oversendt til SSA";
                //series.Points[7].LegendText = "Arkivert";

            }
        }

        private DataTable GeCharttData()
        {

            DataTable dt = new DataTable();

            dt.Columns.Add("Data", Type.GetType("System.String"));

            dt.Columns.Add("NySak", Type.GetType("System.Int32"));
            dt.Columns.Add("UnderBehandling", Type.GetType("System.Int32"));
            dt.Columns.Add("VenterSvar", Type.GetType("System.Int32"));
            dt.Columns.Add("Til Overvaking", Type.GetType("System.Int32"));
            dt.Columns.Add("FerdigBehandlet", Type.GetType("System.Int32"));
            dt.Columns.Add("Klar til raad", Type.GetType("System.Int32"));
            dt.Columns.Add("Oversendt til SSA", Type.GetType("System.Int32"));
            dt.Columns.Add("Arkivert", Type.GetType("System.Int32"));

            DataRow dr1 = dt.NewRow();

            dr1["Data"] = "2016";

            dr1["NySak"] = 32; // Series 1
            dr1["UnderBehandling"] = 45; // Series 2
            dr1["VenterSvar"] = 60;
            dr1["Til Overvaking"] = 32;
            dr1["FerdigBehandlet"] = 45;
            dr1["Klar til raad"] = 60;
            dr1["Oversendt til SSA"] = 32;
            dr1["Arkivert"] = 45;

            dt.Rows.Add(dr1);

            DataRow dr2 = dt.NewRow();

            dr2["Data"] = "2017";

            dr2["NySak"] = 12;
            dr2["UnderBehandling"] = 35;
            dr2["VenterSvar"] = 10;
            dr2["Til Overvaking"] = 70;
            dr2["FerdigBehandlet"] = 21;
            dr2["Klar til raad"] = 44;
            dr2["Oversendt til SSA"] = 10;
            dr2["Arkivert"] = 45;


            dt.Rows.Add(dr2);

            ChartStatus.Legends["Default"].BorderWidth = 1;
            ChartStatus.Legends["Default"].MaximumAutoSize = 100;
            ChartStatus.Legends["Default"].BorderColor = System.Drawing.Color.Black;

            // Add item column separator of type line
            ChartStatus.Legends["Default"].ItemColumnSeparator = LegendSeparatorStyle.Line;

            ChartStatus.Legends[0].Enabled = true;

            // Set title
            ChartStatus.Legends[0].Title = "Legend: BruddLos Status";

           
            //ChartStatus.Series[0].LegendText = "NySak";
            //ChartStatus.Series[1].LegendText = "UnderBehandling";
            //ChartStatus.Series[2].LegendText = "VenterSvar";
            //ChartStatus.Series[3].LegendText = "Til Overvaking";
            //ChartStatus.Series[4].LegendText = "FerdigBehandlet";
            //ChartStatus.Series[5].LegendText = "Klar til raad";
            //ChartStatus.Series[6].LegendText = "Oversendt til SSA";
            //ChartStatus.Series[7].LegendText = "Arkivert";

            return dt;

        }

I have tried the commented lines, but it does not work.

Any help will be very much appreciated