老师，下面代码是自动编号的编号，在开发时测试都没有问题，正是用的时候提示运行错误，请老师帮助，谢谢！！

错误信息：

.NET Framework 版本：2.0.50727.3655
Foxtable 版本：2014.11.11.1
错误所在事件：表，ZJSQB2，DataColChanged
详细错误信息：
Exception has been thrown by the target of an invocation.
Cannot evaluate. Expression \'System.Data.NameNode\' is not an aggregate.

代码：

Select e.DataCol.Name
    Case "SQRQ","SQDWJM"
        If e.DataRow.IsNull("SQRQ") OrElse e.DataRow.IsNull("SQDWJM") Then
            e.DataRow("SQDBH") = Nothing
        Else
            Dim d As Date = e.DataRow("SQRQ")
            Dim y As Integer = d.Year
            Dim m As Integer = d.Month
            Dim Days As Integer = Date.DaysInMonth(y,m)
            Dim fd As Date = New Date(y,m,1) \'获得该月的第一天
            Dim ld As Date = New Date(y,m,Days) \'获得该月的最后一天
            Dim bh As String = e.DataRow("SQDWJM") & "-" & Format(d,"yyyyMM") & "-" \'生成编号的前缀
            If e.DataRow("SQDBH").StartsWith(bh) = False \'如果单据编号前缀不符
                Dim max As String
                Dim idx As Integer
                Dim flt As String
                flt = "SQDWJM = \'"& e.DataRow("SQDWJM") & "\' And SQRQ >= #" & fd & "# And SQRQ <= #" & ld & "# And [_Identify] <> " & e.DataRow("_Identify")
                max = e.DataTable.Compute("Max(SQDBH)",flt) \'取得该月的相同工程代码的最大单据编号
                If max > "" Then \'如果存在最大单据编号
                    idx = CInt(max.Substring(bh.length,3)) + 1 \'获得最大单据编号的后四位顺序号,并加1
                Else
                    idx = 1 \'否则顺序号等于1
                End If
                e.DataRow("SQDBH") = bh & Format(idx,"000")
            End If
        End If
End Select

确定后，也能自动生成单据编号，但就是每一行都要提示运行错误。

.NET Framework 版本：2.0.50727.3655
Foxtable 版本：2014.11.11.1
错误所在事件：表，ZJSQB2，DataColChanged
详细错误信息：
Exception has been thrown by the target of an invocation.
Cannot evaluate. Expression \'System.Data.NameNode\' is not an aggregate.

确定后，也能自动生成单据编号，但就是每一行都要提示运行错误。

 代码没有问题，肯定是连环的错误，请再去检测你的Datacolchanged事件其它代码。

 弄不好就请上传具体例子。

老师，测试下来是下面这段代码的2以后的代码有错。思路是：A表自动复制到B表，然后相关人员在B表操作代码2后的列，然后将在B表操作的列自动复制到A表对应的行的单位格（列）。请老师帮我处理一下，谢谢

If e.DataCol.Name = "sbzgb" AndAlso e.DataRow("sbzgb") = True Then
     Dim dr As DataRow = DataTables("ZJsqB").AddNew
     For Each dc As DataCol In DataTables("ZJsqB").DataCols
         dr(dc.Name) = e.DataRow(dc.Name)
     Next
End If
MessageBox.Show(1)
If e.DataCol.Name = "SQDbh" Then
MessageBox.Show(2)
    e.DataRow("总工办") = DataTables("ZJSQB").Compute("总工办","[SQDBH] = \'" & e.NewValue & "\'")
MessageBox.Show(3)
    e.DataRow("JTZGB1") = DataTables("ZJSQB").Compute("JTZGB1","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("JTZGB2") = DataTables("ZJSQB").Compute("JTZGB2","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("JTZGB3") = DataTables("ZJSQB").Compute("JTZGB3","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("时间5") = DataTables("ZJSQB").Compute("时间5","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("集团财务1") = DataTables("ZJSQB").Compute("集团财务1","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("JTCWB1") = DataTables("ZJSQB").Compute("JTCWB1","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("JTCWB2") = DataTables("ZJSQB").Compute("JTCWB2","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("JTCWB3") = DataTables("ZJSQB").Compute("JTCWB3","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("时间6") = DataTables("ZJSQB").Compute("时间6","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("集团副总") = DataTables("ZJSQB").Compute("集团副总","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("时间7") = DataTables("ZJSQB").Compute("时间7","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("资金副总") = DataTables("ZJSQB").Compute("资金副总","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("时间8") = DataTables("ZJSQB").Compute("时间8","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("董事长1") = DataTables("ZJSQB").Compute("董事长1","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("董事长2") = DataTables("ZJSQB").Compute("董事长2","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("董事长3") = DataTables("ZJSQB").Compute("董事长3","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("时间9") = DataTables("ZJSQB").Compute("时间9","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("PZJE") = DataTables("ZJSQB").Compute("PZJE","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("PZJE1") = DataTables("ZJSQB").Compute("PZJE1","[SQDBH] = \'" & e.NewValue & "\'")
    e.DataRow("PZJE2") = DataTables("ZJSQB").Compute("PZJE2","[SQDBH] = \'" & e.NewValue & "\'")
End If

但是，在另一张表也是同样事件同样的代码，却没有提示运行错误：

If e.DataCol.Name = "sbzgb" AndAlso e.DataRow("sbzgb") = True Then
     Dim dr As DataRow = DataTables("ZJJHB").AddNew
     For Each dc As DataCol In DataTables("ZJJHB").DataCols
         dr(dc.Name) = e.DataRow(dc.Name)
     Next
End If

If e.DataCol.Name = "htbh" Then
    e.DataRow("SHYJ") = DataTables("ZJJHB").Compute("SHYJ","[HTBH] = \'" & e.NewValue & "\'")
    e.DataRow("SH1") = DataTables("ZJJHB").Compute("SH1","[HTBH] = \'" & e.NewValue & "\'")
    e.DataRow("ZJJB") = DataTables("ZJJHB").Compute("ZJJb","[HTBH] = \'" & e.NewValue & "\'")
    e.DataRow("YYSM") = DataTables("ZJJHB").Compute("YYSM","[HTBH] = \'" & e.NewValue & "\'")
    e.DataRow("SH") = DataTables("ZJJHB").Compute("SH","[HTBH] = \'" & e.NewValue & "\'")
    e.DataRow("CWSH2") = DataTables("ZJJHB").Compute("CWSH2","[HTBH] = \'" & e.NewValue & "\'")
End If

 这样写啊

Dim ffdr As DataRow =  DataTables("ZJSQB").Find("[SQDBH] = \'" & e.NewValue & "\'")

If ffdr IsNot Nothing Then

    e.DataRow("JTZGB1") = ffdr("JTZGB1")

    e.DataRow("JTZGB2") = ffdr("JTZGB2")

End If

我要表达的意思是

表A有一列叫“SBZGB”逻辑列，当点击“SBZGB“为勾选时，则将此指定的列自动复制到B表，在B表也有逻辑列叫“信息反馈”。当点击为勾选时，则将在B表编辑的内容对应地自动填充到A表中与单据编号相同的对应的列。就是在将B表内容自动复制到A表时有限制了，就是B表的单据编号只能复制到A表相同的单据编对应的列

从表A到表B，没有限制，但从表B到表A，则受单据编号的限制，需要一一对应

表A是甲编辑，表B乙编辑，甲乙属于不同层次的单位，但都需要在同一内容的表上发表意见。