Regular Expressions: [!0-9] does not work???

tinfanide · #1 05-29-2012, 06:23 AM

Code:

Sub test()

Dim str As String
str = "str 9999 9999 str"

Dim RegExp As Object
Set RegExp = CreateObject("vbscript.regexp")

With RegExp
    .IgnoreCase = True
    .MultiLine = False
    .Pattern = "[!0-9]"
    .Global = True
End With

output = RegExp.Replace(str, "")
MsgBox output

Set RegExp = Nothing

End Sub

I can't understand why [a-z] can extract the numbers but why [!0-9] can't.

Colin Legg · #2 05-29-2012, 09:14 AM

I think you mean to use this:

Code:

.Pattern = "[^0-9]"

Which could be simplified to:

Code:

.Pattern = "\D"

tinfanide · #3 05-29-2012, 06:57 PM

Exactly. Thanks for reminding me about the use of "\D".

Just wonder why the tutorial below says this:
http://www.gmayor.com/replace_using_wildcards.htm
Under the "[!]" section, it says "!" means "NOT". Does VBA regular expressions share a different set of symbols from "Find and Replace" regular expressions?

Colin Legg · #4 05-30-2012, 01:21 AM

Hi,

That find and replace tutorial is for using Microsoft Word's find and replace tool. Regex has it's own set of wildcards and special characters, examples:

http://www.aivosto.com/vbtips/regex.html

tinfanide · #5 05-30-2012, 04:09 AM

Thank you for the reference.
It adds more to my programming library...

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