private void AddIconSet9()
{
FormatConditionCollection conds = GetFormatCondition("M15:O16", Color.BlanchedAlmond);
int idx = conds.AddCondition(FormatConditionType.IconSet);
FormatCondition cond = conds[idx];
cond.IconSet.Type = IconSetType.Quarters5;
Cell c = _sheet.Cells["M15"];
c.PutValue("Quarters5");
}
// This method implements the IconSet conditional formatting type with 4 Ratings attribute.