private void tryShowRowNumberColumn(ICollection<ColumnAttributes> result)
{
if (_conventions == null) return;
if (!_conventions.ShowRowNumberColumn) return;
var colDef = getRowNoCol();
if (!string.IsNullOrEmpty(_conventions.RowNumberColumnCaption))
{
colDef.HeaderCell.Caption = _conventions.RowNumberColumnCaption;
}
result.Add(colDef);
}