主题：自动复制行的时候，数据列可否变成负数?

If e.DataCol.Name = "逻辑列名" AndAlso e.DataRow("逻辑列名") = True Then
    Dim nma() As String = {"A1","A2","A3","A4","数量"} 'A表数据来源列
    Dim nmb() As String = {"B1","B2","B3","B4","数量"} 'B表数据接收列
    Dim dr As DataRow = DataTables("表B").AddNew
    For i As Integer = 0 To nma.Length - 1
        dr(nmb(i)) = e.DataRow(nma(i))
    Next
    dr("数量") = -dr("数量")
End If