I am trying to bind a DataTable to a Line chart. The table is just quarterly figures

Number      QRT
------------     -------
1000            Q1
1001            Q2
1002            Q3
1003            Q4

So I wish to have the 4 series, the code snippit is shown below... any ideas?

 foreach (DataRow dr in dt.Rows)
                    {
                        Series c = new Series();
                        c.Stroke = Brushes.Black;
                        c.Label = dr[1].ToString();
                        c.ChartType = ChartType.Line;
                        c.DataSource = dr;
                        c.Fill = Brushes.Blue;                     
                        c.DataMapping = "ValueX = Number; ValueY = QTR;";
                       
                        Marker seriesMarker = new Marker();
                        seriesMarker.Type = MarkerType.Rectangle;
                        seriesMarker.Foreground = Brushes.Black;
                        seriesMarker.FontSize = 14;

                        xamChart5.Series.Add(c);
                        this.xamChart5.Series[Index].Marker = seriesMarker;
                        Index = Index + 1;
                    }