Excel公式如何连接字符串以供外部参考 [英] Excel formula how to concatenate string for external reference

问题描述

假设我在一个单元格中有以下公式，该公式从另一个工作簿中读取单元格的值

Say I have the following formula in a cell that reads the value of a cell from another work book

='c:	emp[external book.xlsx]SheetX'!$E$4

并且我希望 c: emp[external book.xlsx]SheetX 的值来自此工作表中的另一个单元格.我将如何重写此公式以连接此值和 "!$E$4"

and I want the value of c: emp[external book.xlsx]SheetX to come from another cell in this sheet. How would I rewrite this formula to concatenate this value and "!$E$4"

假设单元格 A1 包含 c: emp[external book.xlsx]SheetX

推荐答案

由于以下内容不适用于封闭的工作簿，因此这里有一个笨拙的概念验证可以用 VBA 做到这一点(我想有更好的方法来做到这一点):

As the below won't work on a closed workbook, here is a clunky proof-of-concept of how you could do it with VBA (I imagine there are better ways of doing this):

Sub ClosedWorkbook()

Dim currSht As Worksheet
Dim targetWbk As Workbook
Dim Path As String

' Turn off updating
Application.ScreenUpdating = False

' Set a reference to the current sheet
Set currSht = ActiveWorkbook.ActiveSheet

' Get the value in the formula cell (A1 here, could be ActiveCell if in a loop, etc.)
PathSheet = currSht.Range("A1").Value

' Split out the path - this is very clunky, more of a proof (?) of concept
' This is depends on the path being as you mentioned, and the IF block is to 
' check if the apostrophe is present in the cell (since it is the escape character,
' it is usually skipped)
If Left(PathSheet, 1) = "'" Then
  Path = Replace(Mid(PathSheet, 2, InStr(PathSheet, "]") - 2), "[", "")
  Sheet = Mid(PathSheet, InStr(PathSheet, "]"))
  Sheet = Left(Sheet, Len(Sheet) - 2)
Else
  Path = Replace(Mid(PathSheet, 1, InStr(PathSheet, "]") - 1), "[", "")
  Sheet = Mid(PathSheet, InStr(PathSheet, "]") + 1)
  Sheet = Left(Sheet, Len(Sheet) - 2)
End If

' Open the target workbook
Set targetWbk = Workbooks.Open(Path)

' Grab the value from E4 and drop it in a cell (D1 here, could be ActiveCell, etc.)
MyValue = targetWbk.Sheets(Sheet).Range("E4").Value
currSht.Range("D5").Value = MyValue

' Close the target
targetWbk.Close

Application.ScreenUpdating = True
End Sub

<小时>

旧方法(不适用于封闭的工作簿)

---

OLD WAY (doesn't work on closed workbooks)

我相信这可以捕捉到您正在寻找的内容.在这个例子中，单元格 A1 有我的工作表路径:

I believe this captures what you're looking for. In this example, cell A1 had my sheet path:

'C:	emp[externalworkbook.xlsx]Sheet1'!

在单元格 B1 中，我有公式:

In cell B1 I have the formula:

=INDIRECT(A1 & "$E$4")

将工作表值与 $E$4 连接以生成完整路径，然后由 INDIRECT 将其转换为值.需要注意的一件事:撇号是转义字符，因此根据您的数据，您可能需要在公式中特别说明:

Which concatenates the sheet value with $E$4 in order to generate the full path, which is then turned into a value by INDIRECT. One thing to note: the apostrophe is an escape character, so depending on your data, you may have to account for it specially in your formula:

=INDIRECT("'" & A1 & "$E$4")

如果您使用的是 Excel 2007 或更高版本，您可以将其包装在 IFERROR 公式中以排除猜测:

If you're using Excel 2007 or above, you could wrap it in an IFERROR formula to take out the guesswork:

=IFERROR(INDIRECT(A1 & "$E$4"),INDIRECT("'" & A1 & "$E$4"))

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