Regular Expression to take part of a string

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Hello all,

I have a string, it is a page source from a website.
I need a regular expression to get out some news items from the page source.
The website didn't have RSS, so I'm having to do it this way.

I think it'll be something like this:

VB

"(?<=(<div id=""newsItem"">)).*?(?=(</div>))"

But I'm very knew to regular expressions, I've always steered away from them until now.

Can anyone help with this issue please?

Any replies are greatly appreciated,
Tom.

Posted 10-Jan-13 21:48pm

thomasriley

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Dave Kreskowiak · Answer 1 · 2013-01-11T04:40:00

Solution 1

Get a copy of Expresso[^] and start writing and testing expressions. There's no better time to learn than when you need it!

Posted 11-Jan-13 4:40am

Dave Kreskowiak

Comments

Sergey Alexandrovich Kryukov 11-Jan-13 22:03pm

Right advice. And last sentence is just wise. My 5.
—SA

Thomas Daniels · Answer 2 · 2013-01-11T06:03:00

Hi,

Your expression is correct. Use a Match to get the news from the HTML tags. First, add this at the top of your code file:

VB

Imports System.Text.RegularExpressions

Then, use this code to get the news from the HTML tags:

VB

Dim newsAndHtmlTags As String = "<p><div id=""newsItem"">This is news!</div></p>"
Dim pattern As String = "(?<=(<div id=""newsItem"">)).*?(?=(</div>))"
Dim match As System.Text.RegularExpressions.Match = Regex.Match(newsAndHtmlTags, pattern)
Dim news As String = match.Value

Hope this helps.