Sehboo,
Using Alternation you can combine regular expressions.
Dim regex As New Regex(Expression & "|" & HrefPattern,
RegexOptions.IgnoreCase Or[color=blue]
> RegexOptions.Compiled)[/color]
You may want to also use a grouping construct with a name so you know which
expression you matched...
Also you may want to use Match & NextMatch to walk the matches found,
however I do not have a good example of this...
I find both of the following sites invaluable when working with regular
expressions.
A tutorial & reference on using regular expressions:
http://www.regular-expressions.info/
The MSDN's documentation on regular expressions:
http://msdn.microsoft.com/library/de...geElements.asp
Hope this helps
Jay
"Sehboo" <masoodadnan@hotmail.com> wrote in message
news:7bfc97ca.0404021524.6cea990d@posting.google.c om...[color=blue]
> Hi,
>
> I have several regular expressions that I need to run against
> documents. Is it possible to combine several expressions in one
> expression in Regex object. So that it is faster, or will I have to
> use all the expressions seperately?
>
> Here are my regular expressions that check for valid email address and
> link
> Dim Expression As String =
> "([\w\-]+\.)*[\w\-]+@([\w\-]+\.)+([\w\-]{2,5})"
> EmailRegex = New Regex(Expression, RegexOptions.IgnoreCase Or
> RegexOptions.Compiled)
>
> Dim HrefPattern As String =
> "href\s*=\s*(?:""(?<match>[^""]*)""|(?<match>\S+))"
> HrefRegex = New Regex(HrefPattern, RegexOptions.IgnoreCase Or
> RegexOptions.Compiled)
>
> so can I combine both regular expressions in one?
>
> Thanks[/color]
