Comments on: Regular Expressions in C# – Practical Usage

By: Nayana

Nayana — Tue, 07 Apr 2009 08:48:09 +0000

HI, I am relatively new to regular expressions. I am still not clear on what does [^>] match in the following regex? Regex HTMLTag = new Regex(@”(]+>)”); string Input = "Ipod News";

By: Scott

Scott — Fri, 13 Mar 2009 15:06:31 +0000

Thanks for the article. One thing I never knew is the string swap. Thanks.

By: JM

JM — Fri, 13 Mar 2009 10:24:14 +0000

nice !

By: David Kemp

David Kemp — Fri, 13 Mar 2009 09:47:00 +0000

In you first example,
Regex HTMLTag = new Regex(@”(]+>)”);
the parenthesis are redundant, and as you’re not using the captured group, you should either remove them, or replace then with the non-capturing group instruction
eg
Regex HTMLTag = new Regex(@”]+>”);
or
Regex HTMLTag = new Regex(@”(?:]+>)”);

By: Martijn

Martijn — Fri, 13 Mar 2009 02:26:31 +0000

Hi Pedro,

There is no need for a final question mark. Similar to how “a” matches every “a” in the input string, the HTML Tag pattern as a whole matches to every valid HTML tag in the input string.

You only need a question mark if in the pattern definition you might, or might not have a particular character.

Cheers,
Martijn

By: pedro

pedro — Thu, 12 Mar 2009 18:54:05 +0000

Why (]+>) instead of (]+>)?