DataColChanged事件代码, If e.DataCol.Name = "规格" andalso e.datarow("品类") ="纸箱" then Dim Filter As String = "[产品编号] = '" & e.DataRow("产品编号") & "'" Dim drs As List(Of DataRow) = DataTables("表B").Select(Filter) For Each dr As DataRow In drs
if dr.isnull("包装") then dr("包装") = e.DataRow("规格")