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copied!<p>Assuming that the link starts or ends either with a space or at beginnd/end of line (or inside an existing <code>A</code> tag) I came up with the following code, which also includes some sample texts:</p> <pre><code>string regexPattern = "((?:<a (?:.*?)href=\")|^|\\s)((?:http[s]?://)?(?:\\S+)(?:\\.(?:\\S+?))+?)((?:\"(?:.*?)>(.*?)</a>)|\\s|$)"; string[] examples = new string[] { "some text <a href=\"http://www.msn.com/path/file?page=some.page&subpage=9#jump\">MSN</a> more text", "some text http://www.msn.com/path/file?page=some.page&subpage=9#jump more text", "some text http://www.msn.com/path/file?page=some.page&subpage=9#jump more text", "some text https://www.msn.com/path/file?page=some.page&subpage=9#jump more text", "some text www.msn.com/path/file?page=some.page&subpage=9#jump", "www.msn.com/path/file?page=some.page&subpage=9#jump more text" }; Regex re = new Regex(regexPattern); foreach (string s in examples) { MatchCollection mc = re.Matches(s); foreach (Match m in mc) { string prePart = m.Groups[1].Value; string actualLink = m.Groups[2].Value; string postPart = m.Groups[3].Value; string linkText = m.Groups[4].Value; MessageBox.Show(" prePart: '" + prePart + "'\n actualLink: '" + actualLink + "'\n postPart: '" + postPart + "'\n linkText: '" + linkText + "'"); } } </code></pre> <p>As this code uses groups with numbers it should be possible to use the regular expression in JavaScript too.</p> <p>Depending on what you need to do with the existing <code>A</code> tag you need to parse the particular first group as well.</p> <p><strong>Update:</strong> Modified the regex as requested so that the link Text becomes group no. 4</p> <p><strong>Update 2:</strong> To better catch malformed links you might try this modified version:</p> <pre><code>pattern = "((?:<a (?:.*?)href=\"?)|^|\\s)((?:http[s]?://)?(?:\\S+)(?:\.(?:[^>\"\\s]+))+)((?:\"?(?:.*?)>(.*?)</a>)|\\s|$)"; </code></pre>

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