主题：明细表的多内容怎么跨表综合统计到订单表

子表DataColChanged事件

If e.DataCol.Name = "产品" orelse e.datacol.name = "数量" Then
    Dim pr As DataRow = e.DataRow.GetParentRow("订单")
    If pr IsNot Nothing Then
        Dim str As String = ""
        For Each dr As DataRow In pr.GetChildRows(e.DataTable.name)
            str &= dr("产品") & "*" & dr("数量") & ","
        Next
        pr("产品") = str.trim(",")
    End If
End If