Substring of a string

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Hi all,

I have some values like

1)https://www.facebook.com/pages/Delhi/Shemrock-Chain-of-Preschools/359534360364
2)http://twitter.com/#!/ShemrockGroup
3)http://www.youtube.com/user/shemrocknurseryrhyme

can i split facebook from first string, twitter from second,youtube from thiird string ..

The problem is that what ever may the url i want to split just Domainname part only..
It is fro handling FoloOn part for a Service
Can anybody help me...
Thank you in Advance

Posted 8-May-12 19:16pm

reogeo2008

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Comments

Sergey Alexandrovich Kryukov 9-May-12 1:25am

What do you mean by "split facebook", etc? What prevented you from just looking at the string class just to see what members it provides?
--SA

reogeo2008 9-May-12 1:34am

what i meant is ,if the url is
https://www.facebook.com/pages/Delhi/Shemrock-Chain-of-Preschools/359534360364
just pick the facebook
if http://twitter.com/#!/ShemrockGroup
just pick the twitter

and so on for any url

Sergey Alexandrovich Kryukov 9-May-12 1:26am

C# or JavaScript? Server or client side?
--SA

reogeo2008 9-May-12 1:29am

Server side ,C#...i got some functions to make it which return facebook.com as answer but i need just facebook or twitter or youtube etc as answer after substring function worked...
pls give me a suggestion

4 solutions

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VJ Reddy · Answer 1 · 2012-05-09T16:43:00

I think the Uri class can be used to extract the Host name from the url string, it can be split up with '.' and the first word which does not match the exempted strings can be taken as shown below

C#

string[] urls = {@"https://WWW.facebook.com/pages/Delhi/Shemrock-Chain-of-Preschools/359534360364",
        @"http://twitter.com/#!/ShemrockGroup",
        @"http://www.youtube.com/user/shemrocknurseryrhyme"};

foreach(string url in urls)
//"www mail"  etc. to exclude the intial parts not required.
    Console.WriteLine (((new Uri(url)).Host).Split('.')
        .FirstOrDefault(str => !@"www mail".Contains(str.ToLower())) ?? string.Empty);

//Output
//
//facebook
//twitter
//youtube

P.Salini · Answer 2 · 2012-05-08T19:20:00

Solution 1

see this

http://forums.asp.net/t/1187298.aspx/1[^]

http://www.jonasjohn.de/snippets/csharp/extract-domain-name-from-url.htm[^]

Posted 8-May-12 19:20pm

P.Salini

madhuri@mumbai · Answer 3 · 2012-05-08T19:24:00

Solution 2

Hi
below answer may be helpful to you

JavaScript

<script type="javascript">
---

var nPage = window.location.pathname;
nPage = nPage.substring(nPage.lastIndexOf('/') + 1);
alert(npage);

you can change above substring as per convineint...</script>

Posted 8-May-12 19:24pm

madhuri@mumbai

Updated 9-May-12 11:12am

v2

**JF2015** · Answer 4 · 2012-05-08T19:52:00

Very dirty, but working solution to get you an idea (I don't recommend you implementing it that way!!!):

C#

private void Form1_Load(object sender, EventArgs e)
{
   string s1 = "https://www.facebook.com/pages/Delhi/Shemrock-Chain-of-Preschools/359534360364";
   string s2 = "http://twitter.com/#!/ShemrockGroup";
   string s3 = "http://www.youtube.com/user/shemrocknurseryrhyme";
   MessageBox.Show(ExtractName(s1));
   MessageBox.Show(ExtractName(s2));
   MessageBox.Show(ExtractName(s3));
}

private static string ExtractName(string s1)
{
   string s1Split = s1.Substring(s1.IndexOf("//") + 2);
   s1Split = s1Split.Remove(s1Split.IndexOf('/'));
   if (s1Split.Contains("www."))
      s1Split = s1Split.Replace("www.", "");
   s1Split = s1Split.Substring(0, s1Split.IndexOf('.'));
   return s1Split;
}

Substring of a string

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