private void AddIconSet10()
{
FormatConditionCollection conds = GetFormatCondition("M17:O18", Color.Blue);
int idx = conds.AddCondition(FormatConditionType.IconSet);
FormatCondition cond = conds[idx];
cond.IconSet.Type = IconSetType.Rating4;
Cell c = _sheet.Cells["M17"];
c.PutValue("Rating4");
}
// This method implements the IconSet conditional formatting type with 5 Ratings attribute.