主题：[求助]导入EXCEL表格更新原有数据的方法

参考 http://www.foxtable.com/webhelp/scr/2334.htm

http://www.foxtable.com/bbs/dispbbs.asp?BoardID=2&ID=101056&skin=0

修改代码

Dim dlg As New OpenFileDialog '定义一个新的OpenFileDialog
dlg.Filter= "Excel文件|*.xls" '设置筛选器
If dlg.ShowDialog = DialogResult.Ok Then '如果用户单击了确定按钮
    Dim c As Integer = 0
    Dim x As Integer = 0
    Dim Book As New XLS.Book(dlg.FileName)
    Dim Sheet As XLS.Sheet = Book.Sheets(0)
    Tables("班级信息表").StopRedraw()
    '注意以下数组中列名称的顺序,必须和Excel表中的列顺序一致
    Dim nms() As String = {"班级编号","班级名称","学院","学制","培养层次","年级","素质导师","备注"}
    '注意下面的循环变量从1开始,而不是从0开始,因为Excel表的第一行是标题
    For n As Integer = 1 To Sheet.Rows.Count -1
        Dim bh As String = sheet(n,0).Text
        dim fdr as datarow = DataTables("班级信息表").Find("班级编号 = '" & bh & "'")
        If fdr Is Nothing Then '如果不存在同编号的订单
            c = c + 1
            fdr = dataTables("班级信息表").AddNew()
        else
            x = x + 1
        End If
        For m As Integer = 0 To nms.Length - 1
            fdr(nms(m)) = Sheet(n,m).Value
        Next
    Next
    Tables("班级信息表").ResumeRedraw()
    DataTables("班级信息表").Save
    MessageBox.Show("导入完成,共导入" & c & "条记录,修改" & x & "条记录")
End If

变量n记录的是导入的新增的条数；变量x记录的是修改原来表的数据的条数。这两个数据不正确吗？

Dim dlg As New OpenFileDialog '定义一个新的OpenFileDialog
dlg.Filter= "Excel文件|*.xls" '设置筛选器
If dlg.ShowDialog = DialogResult.Ok Then '如果用户单击了确定按钮
    Dim c As Integer = 0
    Dim x As Integer = 0
    Dim Book As New XLS.Book(dlg.FileName)
    Dim Sheet As XLS.Sheet = Book.Sheets(0)
    Tables("班级信息表").StopRedraw()
    '注意以下数组中列名称的顺序,必须和Excel表中的列顺序一致
    Dim nms() As String = {"班级编号","班级名称","学院","学制","培养层次","年级","素质导师","备注"}
    '注意下面的循环变量从1开始,而不是从0开始,因为Excel表的第一行是标题
    For n As Integer = 1 To Sheet.Rows.Count -1
        Dim bh As String = sheet(n,0).Text
        Dim fdr As DataRow = DataTables("班级信息表").Find("班级编号 = '" & bh & "'")
        If fdr Is Nothing Then '如果不存在同编号的订单
            c = c + 1
            fdr = DataTables("班级信息表").AddNew()
        Else
            For m As Integer = 0 To nms.Length - 1
                If fdr(nms(m)) <> Sheet(n,m).Value
                    x = x + 1
                    Exit For
                End If
            Next
        End If
       
        For m As Integer = 0 To nms.Length - 1
            fdr(nms(m)) = Sheet(n,m).Value
        Next
    Next
    Tables("班级信息表").ResumeRedraw()
    DataTables("班级信息表").Save
    MessageBox.Show("导入完成,共导入" & c & "条记录,修改" & x & "条记录")
End If

回复9楼，参考

http://www.foxtable.com/bbs/dispbbs.asp?BoardID=2&ID=106892&skin=0