鏈接到基於另一個單元格的外部工作簿

Question

我正在使用Excel中的動態外部工作簿數據進行參考，有人可以幫助考慮以下問題：

在我的A2工作簿中，我= = 'C:\\'&A1&' Reports\\[1.xls]Sheet1'!C1)

A1將包含

文件夾A
文件夾B

因此，根據A1中的值，我想指出其中一個

D：\\ Folder A Reports \\ 1.xls
D：\\ Folder B Reports \\ 1.xls

我該如何實現？

謝謝！

Answer 1

間接是您需要的功能：

=INDIRECT("'C:\" & A1 & " Reports\[1.xls]Sheet1'!C1")

我看到的問題是，如果未打開工作表，它將無法解決。

Answer 2

由於INDIRECT在已關閉的書上不起作用，因此必須打開書本非常昂貴，因此通常的做法是

1. 用VBA創建一個臟鏈接。
2. 使用Morefunc插件中的Indirect.Ext 。
3. 我的首選方法是使用XLM ，Harlan Grove在下面的拉取功能中對其進行了改進。

要用於您的目的：

=pull("'C:\\"&A1&"\\"&"[1.xls]Sheet1'!C1")

來自https://numbermonger.wordpress.com/2012/02/11/excel-pull-function-creating-dynamic-links-to-closed-workbooks/

拉動功能

Function pull(xref As String) As Variant
'inspired by Bob Phillips and Laurent Longre
'but written by Harlan Grove
'-----------------------------------------------------------------
'Copyright (c) 2003 Harlan Grove.
'
'This code is free software; you can redistribute it and/or modify
'it under the terms of the GNU General Public License as published
'by the Free Software Foundation; either version 2 of the License,
'or (at your option) any later version.
'-----------------------------------------------------------------
'2004-05-30
'still more fixes, this time to address apparent differences between
'XL8/97 and later versions. Specifically, fixed the InStrRev call,
'which is fubar in later versions and was using my own hacked version
'under XL8/97 which was using the wrong argument syntax. Also either
'XL8/97 didn't choke on CStr(pull) called when pull referred to an
'array while later versions do, or I never tested the 2004-03-25 fix
'against multiple cell references.
'-----------------------------------------------------------------

'2004-05-28
'fixed the previous fix - replaced all instances of 'expr' with 'xref'
'also now checking for initial single quote in xref, and if found
'advancing past it to get the full pathname [dumb, really dumb!]
'-----------------------------------------------------------------
'2004-03-25
'revised to check if filename in xref exists - if it does, proceed;
'otherwise, return a #REF! error immediately - this avoids Excel
'displaying dialogs when the referenced file doesn't exist
'-----------------------------------------------------------------
Dim xlapp As Object, xlwb As Workbook
Dim b As String, r As Range, C As Range, n As Long
'** begin 2004-05-30 changes **

'** begin 2004-05-28 changes **
'** begin 2004-03-25 changes **
n = InStrRev(xref, "\")
If n > 0 Then
If Mid(xref, n, 2) = "\[" Then
b = Left(xref, n)
n = InStr(n + 2, xref, "]") - n - 2
If n > 0 Then b = b & Mid(xref, Len(b) + 2, n)
Else
n = InStrRev(Len(xref), xref, "!")
If n > 0 Then b = Left(xref, n - 1)
End If

'** key 2004-05-28 addition **
If Left(b, 1) = "'" Then b = Mid(b, 2)
On Error Resume Next
If n > 0 Then If Dir(b) = "" Then n = 0
Err.Clear
On Error GoTo 0
End If

If n <= 0 Then
pull = CVErr(xlErrRef)
Exit Function
End If
'** end 2004-03-25 changes **
'** end 2004-05-28 changes **
pull = Evaluate(xref)

'** key 2004-05-30 addition **
If IsArray(pull) Then Exit Function
'** end 2004-05-30 changes **

If CStr(pull) = CStr(CVErr(xlErrRef)) Then
On Error GoTo CleanUp 'immediate clean-up at this point

Set xlapp = CreateObject("Excel.Application")
Set xlwb = xlapp.Workbooks.Add 'needed by .ExecuteExcel4Macro

On Error Resume Next 'now clean-up can wait

n = InStr(InStr(1, xref, "]") + 1, xref, "!")
b = Mid(xref, 1, n)

Set r = xlwb.Sheets(1).Range(Mid(xref, n + 1))

If r Is Nothing Then
pull = xlapp.ExecuteExcel4Macro(xref)

Else
For Each C In r
C.Value = xlapp.ExecuteExcel4Macro(b & C.Address(1, 1, xlR1C1))
Next C

pull = r.Value

End If

CleanUp:
If Not xlwb Is Nothing Then xlwb.Close 0
If Not xlapp Is Nothing Then xlapp.Quit
Set xlapp = Nothing

End If

End Function

Answer 3

Excel公式中對已關閉文件的外部引用不能是動態的，因此可能是這樣的：

=IF(A1="Folder A", 'C:\Folder A Reports\[1.xls]Sheet1'!C1,
                   'C:\Folder B Reports\[1.xls]Sheet1'!C1)