主题：[求助]高速合并

高速合并时，选择更新同主键记录无效，请问是怎么

下载信息  [文件大小：   下载次数： ]

点击浏览该文件:表a.xlsx

我是想将这两个表添加合并为一个新表，并根据主键更新行列内容。

附测试表。

下载信息  [文件大小：   下载次数： ]

点击浏览该文件:表b.xlsx

这是添加“企业名称”列的一块代码，当我设置第二个大循环准备添加第二列时，为什么提示错误，循环代码基本与这块相同

Dim dlg As New OpenFileDialog
dlg.Filter = "Excel文件|*.xls;*.xlsx"
If dlg.ShowDialog =DialogResult.OK Then
    Dim t As Table = Tables("表B")
    t.StopRedraw()
    Dim Book As New XLS.Book(dlg.FileName)
    Dim Sheet As XLS.Sheet = Book.Sheets(0)
    For n As Integer = 1 To Sheet.Rows.Count -1
        Dim r As DataRow = t.DataTable.Find("企业名称 = '" & sheet(n, 0).text & "'")
        If r Is Nothing Then r = t.DataTable.AddNew()
        For i As Integer = 0 To sheet.Cols.Count -1
            Dim aname As String = sheet(0, i).text
            If aname > "" AndAlso t.Cols.Contains(aname) Then
                r(aname) = sheet(n, i).Text
            End If
        Next
    Next
 For n As Integer = 1 To Sheet.Rows.Count -1
        Dim r As DataRow = t.DataTable.Find("纳税人识别号 = '" & sheet(n, 0).text & "'")
        If r Is Nothing Then r = t.DataTable.AddNew()
        For i As Integer = 0 To sheet.Cols.Count -1
            Dim bname As String = sheet(0, i).text
            If bname > "" AndAlso t.Cols.Contains(bname) Then
                r(bname) = sheet(n, i).Text
            End If
        Next
    Next

    t.ResumeRedraw()
End If