Get just the domain name from a URL?

Question

I am trying to extract just the domain name from a URL string. I almost have it... I am using URI

I have a string.. my first thought was to use Regex but then i decided to use URI class

http://www.google.com/url?sa=t&source=web&ct=res&cd=1&ved=0CAgQFjAA&url=http://www.test.com/&rct=j&q=test&ei=G2phS-HdJJWTjAfckvHJDA&usg=AFQjCNFSEAztaqtkaIvEzxmRm2uOARn1kQ

I need to convert the above to google.com and google without the www

I did the following

Uri test = new Uri(referrer); log.Info("Domain part : " + test.Host); 

Basically this returns www.google.com .... i would like to try and return 2 forms if possible... as mentioned...

google.com and google

Is this possible with URI?

Answer 1

Yes, it is possible use:

Uri.GetLeftPart( UriPartial.Authority ) 

Answer 2

@Dewfy: flaw is that your method returns "uk" for "www.test.co.uk" but the domain here is clearly "test.co.uk".

@naivists: flaw is that your method returns "beta.microsoft.com" for "www.beta.microsoft.com" but the domain here is clearly "microsoft.com"

I needed the same, so I wrote a class that you can copy and paste into your solution. It uses a hard coded string array of tld's. http://pastebin.com/raw.php?i=VY3DCNhp

Console.WriteLine(GetDomain.GetDomainFromUrl("http://www.beta.microsoft.com/path/page.htm")); 

outputs microsoft.com

and

Console.WriteLine(GetDomain.GetDomainFromUrl("http://www.beta.microsoft.co.uk/path/page.htm")); 

outputs microsoft.co.uk