Linie in Chart Zeichnen

sqlConnection.Open();

                SqlCommand myCommand = new SqlCommand("SELECT Datum, Start, Stop FROM dbo.MaschZuendung()", sqlConnection);  

                SqlDataReader myReader = null;
                myReader = myCommand.ExecuteReader();



                chart1.Series.Clear();
                chart1.DataBindCrossTable(myReader, "Datum", "Datum", "Start,Stop", "");  



                foreach (System.Windows.Forms.DataVisualization.Charting.Series s in chart1.Series)
                {
                    s.Color = Color.Red;
                    s.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.RangeBar;
                }

                chart1.Legends.Enabled = false;

                chart1.ChartAreas.AxisY.LabelStyle.Format = "HH";  
                chart1.ChartAreas.AxisX.LabelStyle.Format = "dd.MM.yyyy";  
                chart1.ChartAreas.AxisY.Interval = 1;
                chart1.ChartAreas.AxisX.Interval = 1;
                chart1.ChartAreas.AxisY.IntervalType = System.Windows.Forms.DataVisualization.Charting.DateTimeIntervalType.Hours;

                



                DateTime minDate = new DateTime(1900, 1, 1, 0, 0, 0);
                DateTime maxDate = minDate.AddHours(24);
                chart1.ChartAreas.AxisY.Minimum = minDate.ToOADate();
                chart1.ChartAreas.AxisY.Maximum = maxDate.ToOADate();
                
                chart1.ChartAreas.AxisX.Minimum = dateTimePicker1.Value.ToOADate()-1;
                
                chart1.ChartAreas.AxisX.Maximum = dateTimePicker1.Value.ToOADate();
                chart1.ChartAreas.AxisX.LabelStyle.Enabled = false;

                

                sqlConnection.Close();