private void AddIconSet5()
{
FormatConditionCollection conds = GetFormatCondition("M7:O8", Color.Aquamarine);
int idx = conds.AddCondition(FormatConditionType.IconSet);
FormatCondition cond = conds[idx];
cond.IconSet.Type = IconSetType.ArrowsGray3;
Cell c = _sheet.Cells["M7"];
c.PutValue("ArrowsGray3");
}
// This method implements the IconSet conditional formatting type with 4 Arrows Gray attribute.