Please Note: This article is written for users of the following Microsoft Excel versions: 97, 2000, 2002, and 2003. If you are using a later version (Excel 2007 or later), this tip may not work for you. For a version of this tip written specifically for later versions of Excel, click here: Wildcards in 'Replace With' Text.
by Allen Wyatt
(last updated April 27, 2019)
Anne-Mie realizes that she can use wildcards (*?) to search in Excel, but she wonders if she can use wildcards in the replace string. For instance, she would like to search for "ab*de" and replace it with "aa*de", where the asterisk represents any number of characters, or none at all.
The short answer is that there is no way to do this in Excel, as described. If you only wanted to convert the second character of a text value from "b" to "a", then that can be done rather easily:
This, however, is probably not what you want to do; you want a way to use wildcards in the "replace with" text. The technical term for doing such string replacements is called REGEX, which is short for Regular Expressions. REGEX started with languages like Perl but was so powerful that many other programming languages added it on.
The VBA used in Excel is no exception. REGEX was added to Visual Basic 6.0, which means that it made its way to Excel's VBA in Excel 2003. The first step in using REGEX is to turn it on. You do this in the VBA Editor by choosing Tools | References and then making sure there is a check mark next to the Microsoft VBScript Regular Expressions 5.5 option.
Enabling this reference allows you to create REGEX objects. These objects possess a Test method and a Pattern property. This means that you set the Pattern property, and then the Test method checks to see if the pattern exists. A REGEX object also has a Replace method, which is used to do replacements.
Before proceeding, it is important to understand that regular expressions can get very complex and, well, "geeky." There is no way around it; how to work with regular expressions has been the subject of entire books. Fortunately, for the purposes of this tip, the expressions are rather simple in nature. In this case we'll use the pattern "^ab.*de$". This pattern refers to a word that starts (indicated by the ^) with "ab" followed by an arbitrary expression (indicated by *) consisting of at least one character (indicated by the period) and ending (indicated by the $) with "de".
Here is the code that implements the use of the REGEX object to do the actual replacements.
Public Function SearchNReplace1(Pattern1 As String, _ Pattern2 As String, Replacestring As String, _ TestString As String) Dim reg As New RegExp reg.IgnoreCase = True reg.MultiLine = False reg.Pattern = Pattern1 If reg.Test(TestString) Then reg.Pattern = Pattern2 SearchNReplace = reg.Replace(TestString, ReplaceString) Else SearchNReplace = TestString End If End Function
To use this macro, start with the strings you want to change in column A. Assuming that the first string is in cell A1, you could place the following into another cell in order to get the changed text:
This tells the macro that the pattern you want to look for is "^ab.*de$" (the first parameter), and that you want to replace "^ab" with "aa". This formula can be pasted down the column, and you end up with a conversion of column A where the string "ab*de" is replaced by "aa*de".
If you are using an older version of Excel that does not allow you to create REGEX objects, or if you would prefer not to do so, then you can create a macro that will simply step through a group of selected cells and look for any cell that begins with "ab" and ends with "de", and then replaces the beginning part with "aa".
Sub SearchNReplace2() Dim sFindInitial As String Dim sReplaceInitial As String Dim iLenInitial As Integer Dim sFindFinal As String Dim sReplaceFinal As String Dim iLenFinal As Integer Dim sTemp As String Dim rCell As Range sFindInitial = "ab" sReplaceInitial = "aa" sFindFinal = "de" sReplaceFinal = "de" For Each rCell In Selection sTemp = rCell.Value iLenInitial = Len(sFindInitial) iLenFinal = Len(sFindFinal) If Left(sTemp, iLenInitial) = sFindInitial And _ Right(sTemp, iLenFinal) = sFindFinal Then sTemp = Mid(sTemp, iLenInitial + 1) sTemp = Left(sTemp, Len(sTemp) - iLenFinal) sTemp = sReplaceInitial & sTemp & sReplaceFinal rCell.Value = sTemp End If Next Set rCell = Nothing End Sub
To use this routine, simply select the cells you want to change, and then execute the macro. You should also make changes to the sFindInitial, sReplaceInitial, sFindFinal, and sReplaceFinal variables, as needed.
ExcelTips is your source for cost-effective Microsoft Excel training. This tip (3303) applies to Microsoft Excel 97, 2000, 2002, and 2003. You can find a version of this tip for the ribbon interface of Excel (Excel 2007 and later) here: Wildcards in 'Replace With' Text.
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