主题：导入数据按钮代码求教？

以下是引用lisheng7177在2015/2/9 14:50:00的发言：
那要怎么改才不变就不动、变则覆盖、没有则增加？

换一种合并数据方式。

http://www.foxtable.com/help/topics/2334.htm

肯定可以，参考这段

Dim dlg As New OpenFileDialog
dlg.Filter = "Excel文件|*.xls"
dlg.MultiSelect = True '允许选择多个文件
If dlg.ShowDialog =DialogResult.OK Then

End If

 逻辑列要特别处理一下

For m As Integer = 0 To nms.Length - 1
   
    If DataTables("理论机考表").DataCols(nms(m)).IsBoolean Then
        If Sheet(n,m).Value = 0 Then
            dr(nms(m)) = False
        Else
            dr(nms(m)) = True
        End If
    Else
        dr(nms(m)) = Sheet(n,m).Value
    End If
Next

逻辑列导入时，因为数据的问题，要额外处理一下。

Dim Book As New XLS.Book("D:\鉴定表格\理论机考表.xls")

改成

Dim Book As New XLS.Book(dlg.FileName)

 你的 准考证号码 是表达式列，不需要导入的

Dim dlg As New OpenFileDialog
dlg.Filter = "Excel文件|*.xls"
dlg.MultiSelect = True '允许选择多个文件
If dlg.ShowDialog =DialogResult.OK Then
    Dim Book As New XLS.Book(dlg.FileName)
   
    Dim Sheet As XLS.Sheet = Book.Sheets(0)
    Tables("理论机考表").StopRedraw()
    Dim nms() As String = {"工作单位","县公司","姓名","性别","身份证号码","文化程度","鉴定等级","申报鉴定工种","鉴定批次","申报性质","是否合格","理论考否","考试性质","年月","场次","考场","座位号","考试时间","考试地点","准考证号码","备注","照片"}
    For n As Integer = 1 To Sheet.Rows.Count -1
        Dim sfzhm As String = sheet(n,0).Text
        Dim dr As DataRow = DataTables("理论机考表").Find("身份证号码 = '" & sfzhm & "'")
        If dr Is Nothing Then '如果不存在同编号的订单
            dr =  DataTables("理论机考表").AddNew()
        End If
        For m As Integer = 0 To nms.Length - 1
            If DataTables("理论机考表").DataCols(nms(m)).IsBoolean Then
                If Sheet(n,m).Value = 0 Then
                    dr(nms(m)) = False
                Else
                    dr(nms(m)) = True
                End If
            Else If DataTables("理论机考表").DataCols(nms(m)).Expression > "" Then
                '表达式列
            Else
                dr(nms(m)) = Sheet(n,m).Value
            End If
        Next
    Next
End If

 不可能是增加，若是增加，看身份证号码那里是不是有些问题

 看23楼

这样试试

Dim dr As DataRow = DataTables("理论机考表").Find("身份证号码 = '" & sfzhm.Trim() & "'")