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
    For Each fl As String In dlg.FileNames
        Dim mg As New Merger
        mg.SourcePath = fl
        mg.Format = "Excel"
        mg.SourceTableName = "理论机考表$"
        mg.DataTableName = "理论机考表"
        mg.Merge()
    Next
End If

With DataTables("理论机考表")
    .DataCols("身份证号码").RaiseDataColChanged()
   
End With

导入数据时，如有单元格数据发生了变化，不是覆盖导入，而是在原有的行数上增加，这是为什么？

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

.NET Framework 版本：2.0.50727.3655
Foxtable 版本：2014.11.11.1
错误所在事件：窗口,理论机考,Button2,Click
详细错误信息：
String was not recognized as a valid Boolean.Couldn\'t store <0> in 是否合格 Column.  Expected type is Boolean.
String was not recognized as a valid Boolean.

Dim Book As New XLS.Book("D:\\鉴定表格\\理论机考表.xls")
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
        dr(nms(m)) = Sheet(n,m).Value
    Next
Next
Tables("理论机考表").ResumeRedraw()

这是什么原因报错？

我想导入的Excel表不可以放在任何盘里吗？一定得指定放在比如D:\\鉴定表格\\理论机考表.xls？

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

谢谢甜版！问题现在代码报错是什么原因？