hi,

my requirement has been changed... Below is the data in mydataset.. 

    LEVELNAME                    OWNER                     LEVEL                         TGT              ACH             ATG   

In my chart I will show ACH, TGT, and ATG in X axis as data items and Instruments, Pumps, etc as Serires label. I have not used owner column in the chart.

But my tool tip should show the details as LEVELNAME: OWNER:ITEMLABEL:DATAVALUE

eg:

etc...

How can I achieve this...

Hi,

thanks for the help... But my requirement is to show tooltip data...

i.e my chart tool tip also contains the value from non visible fields....

Please help!!!!!!!!!

Your only option is to use IRenderLabel to implement this.

private void Form1_Load(object sender, EventArgs e)
{
   Hashtable labelHash = new Hashtable();
   labelHash.Add("CUSTOM", new MyLabelRenderer());
   myChart.LabelHash = labelHash; 
   myChart.Tooltips.FormatString = "<CUSTOM>";
}

Max this does not work with composite charts. Can you help?

This does indeed work with composite charts. If you're experiencing problems, please provide sample code to help us reproduce the problem. Here's a sample that does work with a custom tooltip renderer:

ultraChart1.ChartType = ChartType.Composite;
ChartArea area = new ChartArea();
ultraChart1.CompositeChart.ChartAreas.Add(area);

NumericSeries series = new NumericSeries();
series.Points.Add(new NumericDataPoint(0, "item1", false));
series.Points.Add(new NumericDataPoint(5, "item2", false));
series.Points.Add(new NumericDataPoint(2, "item3", false));
series.Points.Add(new NumericDataPoint(7, "item4", false));
series.Points.Add(new NumericDataPoint(4, "item5", false));
ultraChart1.CompositeChart.Series.Add(series);

AxisItem xAxis = new AxisItem(ultraChart1, AxisNumber.X_Axis);
xAxis.SetLabelAxisType = SetLabelAxisType.ContinuousData;
xAxis.DataType = AxisDataType.String;

AxisItem yAxis = new AxisItem(ultraChart1, AxisNumber.Y_Axis);
yAxis.DataType = AxisDataType.Numeric;

area.Axes.Add(xAxis);
area.Axes.Add(yAxis);

ChartLayerAppearance layer = new ChartLayerAppearance();
layer.ChartType = ChartType.LineChart;
layer.Series.Add(series);
layer.ChartArea = area;
layer.AxisX = xAxis;
layer.AxisY = yAxis;
ultraChart1.CompositeChart.ChartLayers.Add(layer);

Hashtable labelHash = new Hashtable();
labelHash.Add("CUSTOM", new MyLabelRenderer());
ultraChart1.LabelHash = labelHash;
ultraChart1.Tooltips.FormatString = "<CUSTOM>";

public class MyLabelRenderer : IRenderLabel
{
 public string ToString(Hashtable context)
 {
  int row = (int)context["DATA_ROW"];
  int col = (int)context["DATA_COLUMN"];
  string customLabel = "i am a tooltip";
  //use row and col to fetch an item from your dataset
  //customLabel = GetMyValueFromDataSet;
  return customLabel;
 }
}