Set Default Color For BarChart YAxis.

Question

I am new to MS Chart. I am drawing a simple bar chart with following code. My chart draws red lines, for my datapoints    (Y Axis), I want to draw, I want to set the color of remaining data points for example for 1st record (i.e. dt1) my jobData
have value 10, my graph shows red line for 10 points, for remaining 20 points I need to show the Green Line and also for the remaining data points. Thanks in advance.
         double[] jobData = new double[] { 10, 3, 4, 5, 2, 0, 2, 3, 0, 1 };
            DateTime dt1 = new DateTime(2015, 3, 17, 8, 30, 0);
            DateTime dt2 = new DateTime(2015, 3, 17, 8, 35, 0);
            DateTime dt3 = new DateTime(2015, 3, 17, 8, 40, 0);
            DateTime dt4 = new DateTime(2015, 3, 17, 8, 45, 0);
            DateTime dt5 = new DateTime(2015, 3, 17, 8, 50, 0);
            DateTime dt6 = new DateTime(2015, 3, 17, 8, 55, 0);
            DateTime dt7 = new DateTime(2015, 3, 17, 9, 00, 0);
            DateTime dt8 = new DateTime(2015, 3, 17, 9, 05, 0);
            DateTime dt9 = new DateTime(2015, 3, 17, 9, 10, 0);
            DateTime dt10 = new DateTime(2015, 3, 17, 9, 15, 0);
            DateTime[] xData = new DateTime[] { dt1, dt2, dt3, dt4, dt5,dt6,dt7,dt8,dt9,dt10 };
            InitializeComponent();
            //Horizontal bar chart
            //Create a chart area and add it to the chart
            ChartArea area = new ChartArea("First");
            chart1.ChartAreas.Add(area);
           // chart1.x = Color.Green;
          chart1.Size = new Size(1000, 700);
            //Create a series using the data
            Series barSeries = new Series();
            barSeries.XValueType = ChartValueType.DateTime;
            barSeries.BorderColor = Color.Green;
            barSeries.ChartType = SeriesChartType.Column;
            barSeries.Color = Color.Red;
            area.AxisX.LabelStyle.Format = "HH:mm";
            area.AxisY.Maximum = 30;
            area.AxisY.InterlacedColor = Color.Green;
            area.AxisY.Interval = 1;
          //  chart1.ChartAreas(0).AxisX.LabelStyle.Format = "HH:00"
            barSeries.Points.DataBindXY(xData, jobData );
            //Set the chart type, Bar; horizontal bars
            barSeries.ChartType = SeriesChartType.Bar;
            //Assign it to the required area
            barSeries.ChartArea = "First";
            //Add the series to the chart
            chart1.Series.Add(barSeries);

Answer 1

I am not sure this is exactly what you mean, but, I think the only way to change the data color is to use a different series.
Imports System.Windows.Forms.DataVisualization.Charting
Public Class Form6
Private Sub Form6_Load(sender As Object, e As EventArgs) Handles MyBase.Load
'setup the chart
With Chart1.ChartAreas(0)
.AxisX.Title = "X"
.AxisX.MajorGrid.LineColor = Color.LightBlue
.AxisX.Minimum = 0
.AxisX.Maximum = 24
.AxisX.Interval = 6
.AxisY.Title = "Y"
.AxisY.MajorGrid.LineColor = Color.LightGray
.AxisY.Minimum = 0
.AxisY.Maximum = 24
.AxisY.Interval = 6
.BackColor = Color.FloralWhite 'AntiqueWhite 'LightSkyBlue
.BackSecondaryColor = Color.White
.BackGradientStyle = GradientStyle.HorizontalCenter
.BorderColor = Color.Blue
.BorderDashStyle = ChartDashStyle.Solid
.BorderWidth = 1
.ShadowOffset = 2
End With
Dim heading1 As String = " 1 - 12"
Dim heading2 As String = "13 - 24"
'draw the chart
Chart1.Series.Clear()
Chart1.Series.Add(heading1)
Chart1.Series.Add(heading2)
Chart1.Series(0).ChartType = DataVisualization.Charting.SeriesChartType.Line
Chart1.Series(0).BorderWidth = 1
Chart1.Series(0).Color = Color.Red
Chart1.Series(0).BorderDashStyle = ChartDashStyle.Dash
Chart1.Series(0).MarkerStyle = DataVisualization.Charting.MarkerStyle.Square
Chart1.Series(0).MarkerSize = 4
Chart1.Series(1).ChartType = DataVisualization.Charting.SeriesChartType.Line
Chart1.Series(1).Color = Color.ForestGreen
Chart1.Series(1).BorderWidth = 2
For x = 1 To 24
If x > 12 Then
Chart1.Series(1).Points.AddXY(x, x)
Else
Chart1.Series(0).Points.AddXY(x, x)
End If
Next
End Sub
End Class