Multiple lines using Regex in C#

Question

I'm currently trying to get everything between

http://website2.website.com/ 

and

</strong></p>
<p><strong>http://website2.website.com/</strong><br />
<strong>1234123:12rwe</strong><br />
<strong>ewqwe:rjbvm225</strong><br />
<strong>mel35:zzrg</strong><br />
<p><strong>

This is what I have so far

MatchCollection RealMe = Regex.Matches(html, @"website2(.*)<p><strong>", RegexOptions.Singleline);
            foreach (Match combo in RealMe)
            {
                if (!combot.Value.Contains("xhtml"))
                {
                    listboxRealMe.Items.Add(combo);
                }
            }

This issue with this is that the listboxRealMe adds everything into one line, instead of creating a new item for each line

Why don't you just use CSQuery for this? It'll be much more robust. — Lucas Trzesniewski
– Lucas Trzesniewski, Commented Apr 29, 2015 at 20:51
@LucasTrzesniewski never heard of CSQuery, I'm checking it out right now — DanMossa
– DanMossa, Commented Apr 29, 2015 at 20:54
Ok so by what you are saying, one match is everything in the middle there. So you took your one match and added it as one listbox item. A multi-line textbox probably shows them on different lines. A listbox I would expect to see render each item you add on a line regardless of new line characters. — Mark Balhoff
– Mark Balhoff, Commented Apr 29, 2015 at 20:56
@stribizhev Thanks for that! It let me get exactly in between what I was looking for, but it still gets added onto the listbox as 1 item — DanMossa
– DanMossa, Commented Apr 29, 2015 at 20:56

Pedro Lobito · Accepted Answer · 2015-04-29 20:58:55Z

Try using:

string resultString = null;
try {
    resultString = Regex.Match(subjectString, @"\.com/</strong><br />(.*)<p><strong>", RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Multiline).Value;
} catch (ArgumentException ex) {
    // Syntax error in the regular expression
}

Regex Explanation:

\.com/</strong><br />(.*)<p><strong>

Options: Case insensitive; Exact spacing; Dot matches line breaks; ^$ match at line breaks; Numbered capture

Match the character “.” literally «\.»
Match the character string “com/</strong><br />” literally «com/</strong><br />»
Match the regex below and capture its match into backreference number 1 «(.*)»
   Match any single character «.*»
      Between zero and unlimited times, as many times as possible, giving back as needed (greedy) «*»
Match the character string “<p><strong>” literally «<p><strong>»

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