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How to Make Dynamic Hyperlinks Using C# in ASP.NET

, 28 Dec 2006
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We've all seen blogs and other web sites that seem to be able to intersperse hyperlinks throughout their content, almost whimsically, if the given text is "linkable", or, formatted like a domain name or link of some kind. Here's how.

Introduction

We've all seen blogs and other web sites that seem to be able to intersperse hyperlinks throughout their content, almost whimsically, if the given text is "linkable", or, formatted like a domain name or link of some kind.

I recently had the need to do this (for my site, nonsequiturs.com), and couldn't find a great source for a starting point, well, in C# anyway. So, I went ahead and made one using regular expressions and simple string replaces. It works well, and is relatively fast and reliable. I thought I'd share the code in case others had the need for this functionality.

Features: Automatically makes a hyperlink out of anything that appears to be a domain name or URL. Will skip confusing text, like number sequences (e.g., 10.35), and will ignore existing hyperlinks. You can enclose text with a special tag if you want to specify an area that should not be processed (see the code comments for more). You can also add paramaters to the hyperlink tags that are generated, like "target=" and so forth.

For more code samples, or to contact me directly, visit my site.

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License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

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About the Author

Argentini
Web Developer
United States United States
Michael Argentini is a part-time cryptozoologist who is best known for his theories concerning the existence of big foot, as well as impersonating big foot on several occasions as a prelude to intercourse.

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Comments and Discussions

 
QuestionNeed for help! [modified] Pin
tangcheehong25-Jun-09 22:18
membertangcheehong25-Jun-09 22:18 
NewsUPDATED VERSION OF THE FUNCTION Pin
pocketkaos29-Dec-06 9:59
memberpocketkaos29-Dec-06 9:59 
AnswerRe: UPDATED VERSION OF THE FUNCTION Pin
pocketkaos30-Dec-06 2:28
memberpocketkaos30-Dec-06 2:28 
Questionnice, but what about email links? Pin
Fred_Smith28-Dec-06 6:14
memberFred_Smith28-Dec-06 6:14 
AnswerRe: nice, but what about email links? Pin
pocketkaos28-Dec-06 9:45
memberpocketkaos28-Dec-06 9:45 
AnswerRe: nice, but what about email links? Pin
pocketkaos28-Dec-06 10:16
memberpocketkaos28-Dec-06 10:16 
GeneralRe: nice, but what about email links? Pin
Fred_Smith28-Dec-06 11:33
memberFred_Smith28-Dec-06 11:33 
GeneralRe: nice, but what about email links? Pin
Fred_Smith29-Dec-06 0:43
memberFred_Smith29-Dec-06 0:43 
GeneralRe: nice, but what about email links? Pin
pocketkaos29-Dec-06 3:08
memberpocketkaos29-Dec-06 3:08 
GeneralRe: nice, but what about email links? Pin
Fred_Smith29-Dec-06 3:18
memberFred_Smith29-Dec-06 3:18 
GeneralRe: nice, but what about email links? Pin
pocketkaos29-Dec-06 3:38
memberpocketkaos29-Dec-06 3:38 
GeneralRe: nice, but what about email links? Pin
Fred_Smith29-Dec-06 3:46
memberFred_Smith29-Dec-06 3:46 
GeneralRe: nice, but what about email links? Pin
pocketkaos29-Dec-06 3:53
memberpocketkaos29-Dec-06 3:53 
GeneralRe: nice, but what about email links? Pin
sn10225-Sep-07 5:31
membersn10225-Sep-07 5:31 
GeneralRe: nice, but what about email links? Pin
pocketkaos1-May-08 15:00
memberpocketkaos1-May-08 15:00 

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