主题：自动复制行问题

开发指南自动复制行

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"} 'A表数据来源列
    Dim nmb() As String = {"B1","B2","B3","B4"} '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
End If

要是不用逻辑列名，改用字符型的列如：

If e. DataCol.Name="客户" and AndAlso e.DataRow("客户")="AAA"

 Dim nma() As String = {"A1","A2","A3","A4"} 'A表数据来源列
    Dim nmb() As String = {"B1","B2","B3","B4"} '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
End I

问题是每次重置列后，都会复制一遍，怎样才能只复制一次？