Public ReadOnly Property ParentRowIndex As Integer

Dim instance As DefaultSheetDataModel
Dim value As Integer
 
value = instance.ParentRowIndex

public int ParentRowIndex {get;}

private void fpSpread1ChildViewCreated(object sender, FarPoint.Win.Spread.ChildViewCreatedEventArgs e) 
{
    FarPoint.Win.Spread.Model.DefaultSheetDataModel dm;
    dm = e.SheetView.Models.Data;
    int i;
    i = dm.ParentRowIndex;
    MessageBox.Show("The index of the parent row is " + i.ToString());
}

Private Sub FpSpread1ChildViewCreated(ByVal sender As Object, ByVal e As FarPoint.Win.Spread.ChildViewCreatedEventArgs) Handles
fpSpread1.ChildViewCreated
    Dim dm As FarPoint.Win.Spread.Model.DefaultSheetDataModel
    dm = e.SheetView.Models.Data
    Dim i As Integer
    i = dm.ParentRowIndex
    MessageBox.Show("The index of the parent row is " & i.ToString())
End Sub