参考:
http://www.foxtable.com/help/topics/0106.htm
如果是代码中临时引用,可以用GetParentRow找出父表行:
http://www.foxtable.com/help/topics/0432.htm
例如:
Dim pr As DataRow = e.DataRow.GetParentRow("父表")
If pr IsNot Nothing Then
'....
End If