主题：导入异常

Dim dlg As new OpenFileDialog
If dlg.ShowDialog = DialogResult.OK Then
    Dim App As New MSExcel.Application
    try
        Dim Wb As MSExcel.WorkBook = App.WorkBooks.Open(dlg.FileName)
        Dim Ws As MSExcel.WorkSheet = Wb.WorkSheets("计划表")
        Dim Rg As MSExcel.Range = Ws.UsedRange
        Dim ary = rg.value
       
        Tables("订单").ResumeRedraw()
        Tables("订单").StopRedraw()
        Dim nms() As  String = {"项目","下单日期","MK号","DO号","城市","客户","送货地址","物料代码","数量","体积","重量","承运商","司机","车牌","车数","车型","出车日期","车辆属性","备注","特殊要求","跟车搬运","订单编号"}
        Dim count As Integer = 0
        Dim ls As new List(of Row)
        Dim dic As new Dictionary (Of DataRow, Row)
        systemready = False
        For Each n As Row In Rg.Rows
            If n.IsNull("订单编号") = False
                Dim Filter = "[订单编号] = '" & n("订单编号") & "'"
                Dim dr As DataRow = DataTables("订单").sqlFind(filter)
                If dr Is Nothing Then
                    ls.Add(n)
                    count += 1
                Else
                    dic.add(dr, n)
                End If
            End If
        Next
       
       
        For Each n As Row In ls
           
            Dim r As  Row = Tables("订单").AddNew()
            For  m As  Integer = 0 To nms.Length - 1
                If ary(n,m+1) = Nothing Then
                    r(nms(m)) = Nothing
                Else
                    If Tables("订单").Cols(nms(m)).IsDate Then
                        Dim d As Date
                        If Date.TryParse(ary(n,m+1), d)
                            r(nms(m)) = d
                        End If
                    Else
                        r(nms(m)) = ary(n,m+1)
                    End If
                End If
               
            Next
           
        Next
        Tables("订单").ResumeRedraw()
        msgbox("共有 "& count &" 条数据导入" )
       
    catch ex As exception
        msgbox(ex.message)
    finally
        app.quit
    End try
End If

Tables("订单").save

为了更精确导入 我在excel上用公式根据日期生成了(201501020001)这种类型的订单编号 然后把以前的导入代码改为了上面的代码 我想应该是我改错了 For Each n As Row In ls 以前N是int 被我改为row了 可我想保留日期时间的转换   报的错是

 

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