Child/Parent DataGridViews Question

[Chris]

I have two datagridviews on a form that are linked via a
datarelation. I am using:
"foreach ( DataGridViewRow tripRow in
scenario_TripsDataGridView.Rows )"
to loop thru all the rows in the parent datagridview. For each
parent row I want to get values out of each child datagridview row
also. The child datagridview has DataGridViewComboBoxColumn columns
that I want to get the formatedvalue from so I do not want to get data
from the datarow, which is all that I have been able to do so far
using the following code:
DataRow dr = ( tripRow.DataBoundItem as DataRowView ).Row;

foreach (DataRow child in
dr.GetChildRows(this.dsShipScheduler.Relations["FK_Trip_Products_Scenario_Trips"]))

How can I get the datagridview rows for the child rows for each parent
row?