using RegEx to replace string

Question

i have this pattern i using to replace string:

var html = "some test string";
var regex = new Regex(@"<(.|\n)+?>", RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Multiline);
var result = regex.Replace(html, ?);

this pattern matches all html tags <anything here> and replace with ?. actually ? is " " or "" according to match type. for example if i using below html markup:

<a href="www.google.com">Google</a><a href="www.yahoo.com">Yahoo!</a>

result is something like below:

Google?Yahoo! (here ? should be " ")

and if i using below html markup:

Buy it now for <b>$279</b><b>.99</b>!

result is something like below:

Buy it now for ?$279??.99?! (and here ? should be "")

can anybody help to improve this pattern to works properly? thanks in advance

UPDATE

OK, actually i not found an approach to do that i need, so I'm using MatchEvaluator to detect where ? should be "" and where " "! thanks a lot of ;)

So, you want spaces on some cases, and no spaces on others. Define these case, if possible, and you've solved your problem. — Kobi
– Kobi, Commented Jul 21, 2010 at 10:29
ok, but i can't do this by using RegEx condition statements? — Sadegh
– Sadegh, Commented Jul 21, 2010 at 10:44

Russ Clarke · Accepted Answer · 2010-07-21 10:24:36Z

3

Try this for your Regex:

Regex r = new Regex(@"<(.|\n)*?>", RegexOptions.IgnoreCase | RegexOptions.Singleline);

And check your options, there's no need to combine singleLine and MultiLine.

answered Jul 21, 2010 at 10:24

Russ Clarke

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3 Comments

Sadegh Over a year ago

but if exists any break-line on HTML, then nothing matches

Russ Clarke Over a year ago

It shouldn't if it's RegexOptions.SingleLine, it changes the way that the . behaves. Give it a try without either of the options, it really does works as I copied the expression from live code we use.

Alan Moore Over a year ago

There's no need for the IgnoreCase modifier either (no letters in the regex). And the Singleline modifier allows . to match linefeeds, so you can get rid of that (.|\n) obscenity. ;)

Sebastian · Accepted Answer · 2010-07-21 10:33:27Z

1

You can use RegEx Coach (http://www.weitz.de/regex-coach/) or http://gskinner.com/RegExr/ (a online tool) to test your regular expressions and get a feeling for them.

answered Jul 21, 2010 at 10:33

Sebastian

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1 Comment

Sadegh Over a year ago

thanks but there isn't better than regexhero.net/tester an online RegEx tester tools on the web ;)

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