Regex.Replace

[cj]

I just ran across this in the VB help. Sounds perfect. Only they don't
tell me what namespace must be imported to use regex. I guess that's
the problem cause I pasted this into a test program and it tell me Regex
is not declared.

Function CleanInput(ByVa l strIn As String) As String
' Replace invalid characters with empty strings.
Return Regex.Replace(s trIn, "[^\w\.@-]", "")
End Function

[cj]

Re: Regex.Replace

The help says, "CleanInput returns a string after stripping out all
nonalphanumeric characters except @, - (a dash), and . (a period)."

I also don't get what the \w\ stands for. I get [^.@-] mean anything
but the 3 characters following the ^. I'd assume \w\ means any
alphanumeric character but I don't see that in the documentation on
regular expressions. Can anyone shed any light on this?


cj wrote:[color=blue]
> I just ran across this in the VB help. Sounds perfect. Only they don't
> tell me what namespace must be imported to use regex. I guess that's
> the problem cause I pasted this into a test program and it tell me Regex
> is not declared.
>
> Function CleanInput(ByVa l strIn As String) As String
> ' Replace invalid characters with empty strings.
> Return Regex.Replace(s trIn, "[^\w\.@-]", "")
> End Function[/color]

[cj]

Re: Regex.Replace

system.Text.Reg ularExpressions .Regex.Replace

cj wrote:[color=blue]
> I just ran across this in the VB help. Sounds perfect. Only they don't
> tell me what namespace must be imported to use regex. I guess that's
> the problem cause I pasted this into a test program and it tell me Regex
> is not declared.
>
> Function CleanInput(ByVa l strIn As String) As String
> ' Replace invalid characters with empty strings.
> Return Regex.Replace(s trIn, "[^\w\.@-]", "")
> End Function[/color]

[Gary Chang[MSFT]]

Re: Regex.Replace

Hi,
[color=blue]
>The help says, "CleanInput returns a string after stripping
>out all nonalphanumeric characters except @, - (a dash),
>and . (a period)."[/color]

The help is alright. The [^\w\.@-] should be parsed into [^\w], [^\.],
[^@], and [^-] seperately. The '\w' matches the same as '[A-Za-z0-9_]'.

Thanks!

Best regards,

Gary Chang
Microsoft Online Community Support
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[cj]

Re: Regex.Replace

Thanks Gary,

Your explanation is really good. I had looked up Regular Expressions in
VB help and it gave me a long list but \w was not in the list. I've
been doing some web searches to learn more. VB help is not very helpful
to me any more.


Gary Chang[MSFT] wrote:[color=blue]
> Hi,
>[color=green]
>> The help says, "CleanInput returns a string after stripping
>> out all nonalphanumeric characters except @, - (a dash),
>> and . (a period)."[/color]
>
> The help is alright. The [^\w\.@-] should be parsed into [^\w], [^\.],
> [^@], and [^-] seperately. The '\w' matches the same as '[A-Za-z0-9_]'.
>
> Thanks!
>
> Best regards,
>
> Gary Chang
> Microsoft Online Community Support
> =============== =============== =============== =====
> When responding to posts, please "Reply to Group" via your newsreader so
> that others may learn and benefit from your issue.
> =============== =============== =============== =====
> This posting is provided "AS IS" with no warranties, and confers no rights.
>[/color]

[Gary Chang[MSFT]]

Re: Regex.Replace

You are very welcome, I am glad to discuss this problem with you. :)

Have a nice weekend!

Best regards,

Gary Chang
Microsoft Online Community Support
=============== =============== =============== =====
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
=============== =============== =============== =====
This posting is provided "AS IS" with no warranties, and confers no rights.