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MsChart - Rangebar marker at a specific value

I just can't find a way to add a marker at a specific value on a range bar MsChart.
Let's say we have a simple range bar graph with 1 serie and 1 point. The point has 2 Y values (ex: 5-20). How can you show a triangle marker at 15?
Thank you.

Try this:
private void Form1_Load(object sender, EventArgs e)
{
DataPoint dp1 = new DataPoint(1, new double[] { 5, 15 });
dp1.MarkerStyle = MarkerStyle.Triangle;
dp1.MarkerSize = 12;
dp1.MarkerColor = Color.Red;
DataPoint dp2 = new DataPoint(1, new double[] { 15, 20 });
chart1.Series[0].Points.Add(dp1);
chart1.Series[0].Points.Add(dp2);
}

You can make two chart areas and put them on top of eachother. Make the second chartarea backcolor transparent.
private void Form1_Load(object sender, EventArgs e)
{
chart1.Series.Clear();
chart1.ChartAreas[0].Position = new ElementPosition(0, 0, 100, 100);
Series s1 = new Series();
s1.ChartType = SeriesChartType.RangeBar;
s1.Points.AddXY(2, 2);
s1.Points.AddXY(1, 1);
chart1.Series.Add(s1);
ChartArea ca2 = new ChartArea();
chart1.ChartAreas.Add(ca2);
ca2.Position = new ElementPosition(0, 0, 100, 100);
ca2.BackColor = Color.Transparent;
Series s2 = new Series();
s2.ChartType = SeriesChartType.Point;
s2.MarkerStyle = MarkerStyle.Triangle;
s2.MarkerSize = 10;
s2.Points.AddXY(2, 2);
s2.ChartArea = ca2.Name;
chart1.Series.Add(s2);
}

how to freeze the chart while updating continuously in c#

I am using chart control in my c# application.Using timer updating values in chart at every 1 seconds.Also i enabled scroll bar for the chart , so the scroll bar is keep on adjusting while the values are adding. Actually my requirement is if i drag the scroll bar and hold at any point it has to freeze at that particular point only.It should not adjust when ever i drag and hold the scroll bar at the particular point.How to do that ? Please refer the code below,
int x1=10, x2=10, y1=10, y2=10; //globally declared
private void button1_Click(object sender, EventArgs e) //chart preparation in button click
{
chart1.Series.Clear();
series1.MarkerStyle = MarkerStyle.Circle;
series1.MarkerColor = Color.BlueViolet;
series1.MarkerSize = 7;
series1.Color = System.Drawing.Color.Green;
series1.IsXValueIndexed = true;
series1.YAxisType = AxisType.Primary;
series1.ChartType = SeriesChartType.Line;
this.chart1.Series.Add(series1);
series2.MarkerStyle = MarkerStyle.Circle;
series2.MarkerColor = Color.Orange;
series2.MarkerSize = 7;
series2.Color = System.Drawing.Color.Purple;
series2.IsXValueIndexed = true;
series2.YAxisType = AxisType.Secondary;
series2.ChartType = SeriesChartType.Line;
this.chart1.Series.Add(series2);
chart1.ChartAreas[0].CursorX.AutoScroll = true;
chart1.ChartAreas[0].CursorY.AutoScroll = true;
chart1.ChartAreas[0].AxisX.ScrollBar.Size = 15;
chart1.ChartAreas[0].AxisX.ScrollBar.ButtonStyle = ScrollBarButtonStyles.All;
chart1.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = false;
chart1.ChartAreas[0].AxisX.ScrollBar.Enabled = true;
chart1.ChartAreas[0].AxisX.ScaleView.Zoomable = true;
chart1.Series[0].Points.AddXY(x1, y1);
chart1.Series[1].Points.AddXY(x2, y2);
chart1.ChartAreas[0].AxisX.ScaleView.Position = chart1.ChartAreas[0].AxisX.Minimum;// scrollPosition;
chart1.ChartAreas[0].AxisX.ScaleView.Zoom(chart1.ChartAreas[0].AxisX.Maximum - nCheck, chart1.ChartAreas[0].AxisX.Maximum);
x1 += 1;
x2 += 1;
nlength++;
if (nlength == 25)
{
nCheck = 30;
chart1.Update();
}
else if (nlength == 50)
nCheck = 50;
timer1.Start();
}
public void createGraph() //called in timer
{
chart1.Series[0].Points.AddXY(x1, y1);
chart1.Series[1].Points.AddXY(x2, y2);
chart1.ChartAreas[0].AxisX.ScaleView.Position = chart1.ChartAreas[0].AxisX.Minimum;// scrollPosition;
chart1.ChartAreas[0].AxisX.ScaleView.Zoom(chart1.ChartAreas[0].AxisX.Maximum - nCheck, chart1.ChartAreas[0].AxisX.Maximum);
x1 += 1;
x2 += 1;
nlength++;
if (nlength == 25)
{
nCheck = 30;
chart1.Update();
}
else if(nlength == 50)
nCheck = 50;
}
private void chart1_AxisScrollBarClicked(object sender, ScrollBarEventArgs e)
{
chart1.ChartAreas[0].CursorX.AutoScroll = false;
chart1.ChartAreas[0].CursorY.AutoScroll = false; //here i need to update some code i think so ...
}

As long as the minimum and maximum of an axis is not set, it will auto-adjust to data. Here is an example where a start of user selection fixes the range of x-axis to current view and applies the selection as zoom and frees the axis range again when selection is completed.
double SelectionStartX=0, SelectionEndX=0;
Chart.SelectionRangeChanging += (object sender, CursorEventArgs e) =>
{
//Record selection to be applied as zoom in SelectionRangeChanged event
SelectionStartX = e.ChartArea.CursorX.SelectionStart;
SelectionEndX = e.ChartArea.CursorX.SelectionEnd;
//Stop motion - Fix x-axis range to width of view
e.Axis.Maximum = e.Axis.ScaleView.ViewMaximum;
e.Axis.Minimum = e.Axis.ScaleView.ViewMinimum;
};
Chart.SelectionRangeChanged += (object sender, CursorEventArgs e) =>
{
//Reset previous zooming and apply only last user selected range
if (e.Axis.ScaleView.IsZoomed)
{
e.Axis.ScaleView.ZoomReset();
e.Axis.ScaleView.Zoom(SelectionStartX, SelectionEndX);
}
//Continue motion - Make chart adaptive to data range
e.Axis.Minimum = double.NaN;
e.Axis.Maximum = double.NaN;
};

How can i change my chart to look like column gradient fill style?

This is what I did in the constructor:
drawPoints.Clear();
paintToCalaculate = false;
chart1.Invalidate();
Series S0 = chart1.Series[0];
S0.ChartType = SeriesChartType.Column;
S0.IsValueShownAsLabel = true;
chart1.Series["Series1"]["PixelPointWidth"] = "0.6";
chart1.Series["Series1"]["DrawingStyle"] = "Cylinder";
S0.Color = Color.Transparent;
S0.LegendText = "";
area.BackColor = Color.White;
area.BackSecondaryColor = Color.LightSteelBlue;
area.BackGradientStyle = GradientStyle.DiagonalRight;
area = chart1.ChartAreas[0];
chart1.Series["Series1"].Points.AddXY(10, 10);
area.AxisX.Minimum = 1;
area.AxisX.Maximum = 30;
area.AxisY.Minimum = 1;
area.AxisY.Maximum = 120;
area.AxisX.MajorGrid.LineColor = Color.LightSlateGray;
area.AxisY.MajorGrid.LineColor = Color.LightSlateGray;
The problem is that I'm using the chart paint event to draw points and lines:
Pen pen = new Pen(Color.Blue, 2.5f);
SolidBrush myBrush = new SolidBrush(Color.Red);
private void chart1_Paint(object sender, PaintEventArgs e)
{
if (paintToCalaculate)
{
Series s = chart1.Series.FindByName("dummy");
if (s == null) s = chart1.Series.Add("dummy");
drawPoints.Clear();
s.Points.Clear();
foreach (PointF p in valuePoints)
{
s.Points.AddXY(p.X, p.Y);
DataPoint pt = s.Points[0];
double x = chart1.ChartAreas[0].AxisX.ValueToPixelPosition(pt.XValue);
double y = chart1.ChartAreas[0].AxisY.ValueToPixelPosition(pt.YValues[0]);
drawPoints.Add(new Point((int)x, (int)y));
s.Points.Clear();
}
paintToCalaculate = false;
chart1.Series.Remove(s);
}
foreach (Point p in drawPoints)
{
e.Graphics.FillEllipse(Brushes.Red, p.X - 2, p.Y - 2, 4, 4);
}
if (drawPoints.Count > 1)
{
e.Graphics.DrawLines(pen, drawPoints.ToArray());
}
}
I wanted it to look like this style:
It should look like in the example. But since I'm using the paint event maybe it's not possible this way.
Edit tried this solution i added a new chart control for the test in the form1 designer called chart2. Then in the constructor i did:
chart2.Titles.Add(("Introducing Chart Controls"));
ChartArea chartarea2 = new ChartArea("Main");
chart2.ChartAreas.Add(chartarea2);
Series seriesColumns = new Series("RandomColumns");
seriesColumns.Color = Color.Blue;
chart2.Series.Add(seriesColumns);
Random rnd = new Random(10);
for (int i = 0; i < 10; i++)
{
seriesColumns.Points.Add((rnd.Next(100)));
}
DataPoint dp = new DataPoint(seriesColumns);
dp.Color = Color.Red;
dp.BackGradientStyle = System.Windows.Forms.DataVisualization.Charting.GradientStyle.LeftRight;
seriesColumns.Points.Add(dp);
But no fade in/out color change. Nothing happen.
This is how chart2 look like:

To get the gradient effect you don't necessarily have to use the Paint event. The DataPoint has the BackGradientStyle property that will generate the gradient automatically for you. It will use the colour of the DataPoint. You set it like in the sample below:
var dp = new DataPoint(8D, 12D);
dp.Color = Color.Red;
dp.BackGradientStyle = System.Windows.Forms.DataVisualization.Charting.GradientStyle.LeftRight;
var series = this.chart1.Series[0];
series.Points.Add(dp);
Here the gradient is fading out. If you want it to pass into another color set the BackSecondaryColor property.
dp.BackSecondaryColor = Color.Green;

C#: How to change the color of specific lines in a chart?

I do not want to change the whole series like this:
chart1.Series["test1"].Color = Color.Red;
Instead, I want to change the color of individual lines, like this:
private void dispatcherTimer_Tick(object sender, EventArgs e)
{
var r = new Random();
int i = chart1.Series["test1"].Points.AddXY(r.Next(0, 10), r.Next(0, 10));
try
{
chart1.Series["test1"].Points[i - 1].Color = Color.LightPink;
chart1.Series["test1"].Points[i - 2].Color = Color.LightPink;
chart1.Series["test1"].Points[i - 3].BorderDashStyle = ChartDashStyle.Dash;
chart1.Series["test1"].Points[i - 4].BorderDashStyle = ChartDashStyle.Dash;
chart1.Series["test1"].Points.RemoveAt(i - 5);
}
catch { }
}
However, this is not working and I don't understand why.

The problem was that the SeriesChartType was set to FastLine instead of just Line.
This doesn't work:
chart1.Series["test1"].ChartType = SeriesChartType.FastLine;
This works:
chart1.Series["test1"].ChartType = SeriesChartType.Line;

How to set values in x axis MSChart using C#

I have these XY values:
Series S1 = new Series()
S1.Points.AddXY(9, 25);
S1.Points.AddXY(10, 35);
S1.Points.AddXY(11, 15);
chart1.Series.Add(S1);
but I need to show the X values in the graph like this:
X="9-10"
X="10-11"
X="11-12"
How can I achieve that?
So far this is what I've found:
and here is the code:
private void Form1_Shown(object sender, EventArgs e)
{
chart1.ChartAreas[0].AxisX.Minimum = 7;
chart1.ChartAreas[0].AxisX.Maximum = 15;
Series S1 = new Series();
S1.Points.AddXY(9, 25);
S1.Points.AddXY(10, 35);
S1.Points.AddXY(11, 15);
chart1.Series.Add(S1);
chart1.Series[0].Points[0].AxisLabel = "9-10";
chart1.Series[0].Points[1].AxisLabel = "10-11";
chart1.Series[0].Points[2].AxisLabel = "11-12";
as you can see I work with numbers, and set texts for the X axis labels, but I can do that just for the DataPoints values, I need it for the whole range of values.
Any ideas please?

Here is the answer thanks to sipla:
working with Custom labels and the Customize event:
string[] range = new string[10];
private void Form1_Shown(object sender, EventArgs e)
{
chart1.ChartAreas[0].AxisX.Minimum = 7;
chart1.ChartAreas[0].AxisX.Maximum = 16;
range[0] = "";
range[1] = "7-8";
range[2] = "8-9";
range[3] = "9-10";
range[4] = "10-11";
range[5] = "11-12";
range[6] = "12-1";
range[7] = "1-2";
range[8] = "2-3";
range[9] = "";
Series S1 = new Series();
S1.Points.AddXY(9, 25);
S1.Points.AddXY(10, 35);
S1.Points.AddXY(11, 15);
chart1.Series.Add(S1);
}
int count;
private void chart1_Customize(object sender, EventArgs e)
{
count = 0;
foreach (CustomLabel lbl in chart1.ChartAreas[0].AxisX.CustomLabels)
{
lbl.Text = range[count];
count++;
}
}

Curious as to why your range array was sprawled out like that. It would have been cleaner to put your array in brackets as it was defined and also initialized. e.g.
string[] range = new string[10] {"","7-8","8-9","9-10","10-11","11-12","12-1","1-2","2-3",""};
/*
The tenth element is also likely unnecessary
as it simply repeats the first
element of the array
*/