It worked.  I only had to parse the label text to get the data value, since I had formatted it <Percent_Value>% $<Data_Value> <Item_Label>.

Thank you for your help.

The code should be identical with one exception: replace e.SceneGraph with scene, which is the only parameter in your FillSceneGraph method.

Let me know if that works for you.

Can you help me with the details of how to suppress the leaderlines and labels for slices of the piechart that are < $1000.

 I am trying to do this with v7.2 code...

 Thanks

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In my driver code I have the hook to access the  FillSceneGraph method...

  // add the layer
     igChart.Layer.Add("My Layer", new MyLayer());
     igChart.UserLayerIndex = new string[ {"Default", "My Layer"};
     igChart.InvalidateLayers();
  
     BindDataToChart(igChart, dt);

In my layer class I have the following routine to manipulate the graph Scene...

 public void FillSceneGraph(SceneGraph scene) 
 {
  PrimitiveCollection primitives = new PrimitiveCollection();
  
  /* first let's get a reference to all the columns/bars in the chart, then manipulate them. */
  ArrayList allSlices = new ArrayList();   
  foreach (Primitive p in scene)
  {
   Wedge w = p as Wedge;
   if (w != null)
   {
    allSlices.Add(p);
   }
  }
  
  foreach (Wedge w in allSlices)
  {
   if ((double)w.Value > 1000)
   {

       int index = 0;
       //int index = b.SceneGraph.IndexOf(label);  <-------- What v7.2 codes needs to go here...

      if (index == 2)
      {

           //labels follow the leaderlines, 2 spots further in the collection. <-------- What v7.2 codes needs to go here...
           //Line line = b.SceneGraph[index - 2] as Line;                        <--------

          Line line = null;
          if (line != null)
          {
              primitives.Add(line);
          }
       }
      primitives.Add(w);
   }
  }
  
  //foreach (Primitive p in primitives)    <---------- What v7.2 codes needs to go here...
  //{                                                  <----------
  //e.SceneGraph.Remove(p);             <----------
  //}                                                  <----------

How would you do this in the 2007 Vol.2 version?  I have created a custom layer for the FillSceneGraph(SceneGraph scene) method.  But have not found the right methods to use instead of the FillSceneGraphEventArgs e ones available in Vol.3 version.

Thanks