Comments on: URL parsing and manipulation in .NET

By: guitarpoet

guitarpoet — Mon, 18 May 2009 06:55:54 +0000

Hello, I think the code has a bug and I had rewrite it like this:
private const string urlDecodeRegex = @”([^:]+)://(([^:@]+)(:([^@]+))?@)?([^:/?#]+)(:([\d]+))?([^?#]+)?(\?([^#]+))?(#(.*))?”;

By: Ziv Rozzbach

Ziv Rozzbach — Sun, 05 Oct 2008 15:00:33 +0000

Nice, but it does not do one thing: splitting the host from the domain
so if I enter reag123.afsda123.ukdomain.co.uk it will return me: ukdomain.co.uk

Anyone have any idea how can I do it ?

By: MrToes

MrToes — Mon, 12 May 2008 16:09:24 +0000

It’s also remarkably intolerant of syntax problems. There’s also a problem with the Uri class (in .NET 2.0 Compact Framework at least) where creating it with a string that has leading spaces causes memory corruption. Lovely. We have our own Uri class to fix this (and other) problems. Backward slashes resulting in FormatExceptions is another one that comes to mind. Quite possibly all this is fixed in new shiny .NET versions.

So, how long is it till V-day? :)

By: Damien Guard

Damien Guard — Sat, 03 May 2008 10:34:48 +0000

Thanks for spotting and figuring that out Ross – I must have broken it during the reformatting exercise when I switched to this theme.

[)amien

By: Russ

Russ — Fri, 02 May 2008 17:02:32 +0000

I found the problem, it’s in the regular expression.. Here’s the new line.

private const string urlDecodeRegex = @”([^:]+)://(([^:@]+)(:([^@]+))?@)?([^:/?#]+)(:([d]+))?([^?#]+)?(\?([^#]+))?(#(.*))?”;

By: Russ

Russ — Fri, 02 May 2008 16:52:15 +0000

This works well, but any attempts that I make to use an imported query string dont seem to work. I can build a querystring and export ok, but importing one fails.

Is there a download of this as a .cs class file?

By: Damien Guard

Damien Guard — Fri, 11 Apr 2008 09:56:33 +0000

@Mike: Well you could but if that’s all you want you may as well just grab the string up to the final / with urlString.Substring(0,urlString.LastIndexOf(‘/’)-1)

[)amien

By: Mike

Mike — Mon, 17 Mar 2008 18:46:36 +0000

If I had this: http://damieng.com/blog/2006/07/07/URL_parsing_and_manipulation_in_.NET

How could I get just this part?
http://damieng.com/blog/2006/07/07

By: Fabian

Fabian — Wed, 19 Jul 2006 21:39:27 +0000

Great job, thanks!

By: Damien Guard

Damien Guard — Tue, 18 Jul 2006 14:10:20 +0000

The Uri class in .NET is pretty useless. It doesn’t include username/password properties, the query part is a string instead of a collection of name/value pairs etc.

[)amien

By: Haacked

Haacked — Tue, 18 Jul 2006 07:22:13 +0000

I just checked and Uri in .NET 2.0 is serializable.

By: Haacked

Haacked — Tue, 18 Jul 2006 07:18:18 +0000

You should consider making it Serializable. THat’s one issue I’ve had with the existing Uri class.

By: John Rummell

John Rummell — Tue, 11 Jul 2006 07:43:50 +0000

Excellent. Thank you!

By: John Rummell

John Rummell — Tue, 11 Jul 2006 07:25:52 +0000

I linked from DotNetKicks. This is cool. How would I use this to grab the URL without the QueryString?

By: Damien Guard

Damien Guard — Mon, 10 Jul 2006 21:34:24 +0000

Yeah sorry there are no usage samples - I did write a few but my blog software started activating the anti-spam on me :D To get the current URL:

URL myURL = new URL(Page.Request.Url.ToString());


You could remove all the query string with:
myURL.QueryString = "";

Alternatively if you just wanted to set one item - say a customerID you would normally have to hope it didn't exist and add it - taking note to append "&" or "?" depending on if there are other query values. With this class you can just;
myURL.Query["CustomerID"] = "1";

Oh, and to write our your hyperlink you'd do something like;
nextCustomerLink.Href = myURL.FullURL;

[)amien