Как удалить столбцы элементов по умолчанию в диаграммах dotnet

<pre>void Page_Load(Object sender, EventArgs e)
        {   
            Chart.TitleBox.Label.Text = "Student Progress";
            Chart.Width = 750;
            Chart.Height = 550;
            SeriesCollection mySC = Calculate();
            Chart.XAxis.Label.Text = "Marks";
            Chart.YAxis.Label.Text = "No of Students";
            Chart.SeriesCollection.Add(Calculate());
           
        }

        SeriesCollection Calculate()
        {
            SeriesCollection SC = new SeriesCollection();
            Random myR = new Random(1);
            for (int a = 0; a < 4; a++)
            {
                Series s = new Series();
                s.Name = "Series " + a.ToString();
                for (int b = 1; b < 5; b++)
                {
                    Element e = new Element();
                    e.Name = "Element " + b.ToString();
                    e.YValue = myR.Next(50);
                    s.Elements.Add(e);
                }
                SC.Add(s);
            } 
            SC[0].Element.Color = Color.FromArgb(49, 255, 49);
            SC[0].Elements[0].Name = "English";
            SC[0].LegendEntry.Value = "13";
            SC[0].LegendEntry.Name = "10-15";
            
            SC[1].Element.Color = Color.FromArgb(255, 255, 0);
            SC[1].Elements[0].Name = "Maths";
            SC[1].LegendEntry.Value = "32";
            SC[1].LegendEntry.Name = "10-40";
            
            SC[2].Element.Color = Color.FromArgb(255, 99, 49);
            SC[2].Elements[0].Name = "Science";
            SC[2].LegendEntry.Value = "6";
            SC[2].LegendEntry.Name = "0-10";
            
            SC[3].Element.Color = Color.FromArgb(0, 156, 255);
            SC[3].Elements[0].Name = "Computer";
            SC[3].LegendEntry.Value = "18";
            SC[3].LegendEntry.Name = "15-30";
            return SC;
        }