private void GetParentTable ( ) {
   // get the data relation
   DataRelation dr = myDataSet.Relations [ "CustomerOrders" ];
   // get the parent DataTable of the relation.
   DataTable tbl = dr.ParentTable;
   // print the name and number of rows of the parent table.
   Response.Write ( tbl.TableName + ", " + tbl.Rows.Count );
}

Private Sub GetParentTable ( )
   ' get the data relation
   Dim dr As DataRelation = myDataSet.Relations ( "CustomerOrders" )
   ' get the parent DataTable of the relation.
   Dim tbl As DataTable = dr.ParentTable
   ' print the name and number of rows of the parent table.
   Response.Write ( tbl.TableName & ", " & tbl.Rows.Count )
End Sub