DataRow.GetParentRow Method (DataRelation, DataRowVersion)

private void GetParentRowForTable(DataTable thisTable, 
    DataRelation relation,
    DataRowVersion version) 
{
    if(thisTable ==null){return;}
    // For each row in the table, print column 1 of the  
    // parent DataRow.
    DataRow parentRow;
    foreach(DataRow row in thisTable.Rows)
    {
        parentRow = row.GetParentRow(relation, version);
        Console.Write("\table child row: " + row[1]);
        Console.Write("\table parent row: " + parentRow[1]+ "\n");
    }
}

private void CallGetParentRowForTable() 
{
    // An example of calling the function.
    DataTable thisTable = DataSet1.Tables["Products"];
    DataRelation relation = thisTable.ParentRelations[0];
    // Print only original versions of parent rows.
    GetParentRowForTable(thisTable, relation,
        DataRowVersion.Original);
}