Hi
I have a requirement to show the top 10 pie slices and group all the rest together in one large slice. I need to add all the values for the large slice together, but I'm having difficulty accessing the values. Any tips/pointers are welcome. Thanks.
Here's my code:

double dLargeSliceValue = 0;
for (int i = pieSeries.GetDataPointCount(); i >= 0; i--)
  {
    dLargeSliceValue = dLargeSliceValue + pieSeries.Values[i].Value;
    if (i>9)
      { //group
        //add to value
        dLargeSliceValue = dLargeSliceValue + (double)pieSeries.Values[i]; /* this does not work */
        //remove initial slice
        pieSeries.RemoveDataPointAt(i);
      }
      else
      { //assign color
        pieSeries.FillStyles[i] = new NColorFillStyle(colorList[i]);
      }
  }
  // add a large slice
   NDataPoint dp = new NDataPoint(dLargeSliceValue, groupLabel);
   dp[DataPointValue.PieDetachment] = 1;
   pieSeries.AddDataPoint(dp);