public void Add(Swimmer sw)
{
DataRow row = dTable.NewRow();
row["Frname"] = sw.getFrname();
row[1] = sw.getLName();
row[2] = sw.getAge(); //This one is an integer
dTable.Rows.Add(row);
dTable.AcceptChanges();
}
//---------
public int CompareTo(object swo)
{
Swimmer sw = (Swimmer)swo;
return(lname.CompareTo(sw.getLName()));
}