主题：公式如何修改

没有人这样设计修通的，数据冗余，维护困难，编码难度大幅增加。

同样的数据，应该只出现在一个地方。

还有你原来的公式，完全重复了，有一段是多余的，应该：

If e.DataCol.Name = "选择" Then
    If e.DataRow("选择") = True Then
        Dim nma() As String = {"单位","商品类别","商品代码","商品名称","仓库名称","仓位","日期","进库_折扣","进库_数量","进库_单价","进库_金额","规格","等级"} 'A表数据来源列
        Dim nmb() As String = {"单位","商品类别","商品代码","商品名称","仓库名称","仓位","日期","进库_折扣","进库_数量","进库_单价","进库_金额","规格","等级"} 'B表数据来源列        Dim dr As DataRow = DataTables("库存表").AddNew
        Dim dr As DataRow = DataTables("库存表").AddNew
        For i As Integer = 0 To nma.Length - 1
            dr(nmb(i)) = e.DataRow(nma(i))
        Next
        dr("id") =e.DataRow("_identify")
    Else
        Dim tr As DataRow =DataTables("库存表").find("id ="& e.DataRow("id"))
        If tr IsNot Nothing Then
            tr.delete()
        End If
    End If
End If