Get host domain from URL

Question

how to get host domain from a string URL   GetDomain has 1 input  URL   1 Output  Domain   Example1  INPUT  http   support domain com default aspx id 12345 OUTPUT  support domain com   Example2  INPUT  http   www domain com default aspx id 12345 OUTPUT  www domain com   Example3  INPUT  http   localhost default aspx id 12345 OUTPUT  localhost

User · Answer

Use Uri class and use Host property  Uri url   new Uri   http   support domain com default aspx id 12345    Console WriteLine url Host

User · Answer

var url   Regex Match url    quot  http  https              quot     INPUT    quot https   stackoverflow com questions  quot   OUTPUT    quot https   stackoverflow com  quot

User · Answer

Try this  Console WriteLine GetDomain GetDomainFromUrl  http   support domain com default aspx id 12345       It will output support domain com  Or try   Uri GetLeftPart  UriPartial Authority

User · Answer

The best way  and the right way to do it is using Uri Authority field  Load and use Uri like so     Uri NewUri   if  Uri TryCreate  string with your Url   UriKind Absolute  out NewUri          Console Writeline NewUri Authority      Input   http   support domain com default aspx id 12345 Output   support domain com  Input   http   www domain com default aspx id 12345 output   www domain com  Input   http   localhost default aspx id 12345 Output   localhost   If you want to manipulate Url  using Uri object is the good way to do it   https   msdn microsoft com en-us library system uri v vs 110  aspx

User · Answer

try following statement   Uri myuri   new Uri System Web HttpContext Current Request Url AbsoluteUri    string pathQuery   myuri PathAndQuery   string hostName   myuri ToString   Replace pathQuery          Example1   Input   http   localhost 4366 Default aspx id notlogin  Ouput   http   localhost 4366   Example2   Input   http   support domain com default aspx id 12345  Output  support domain com

User · Answer

You can use Request object or Uri object to get host of url   Using Request Url  string host   Request Url Host    Using Uri  Uri myUri   new Uri  http   www contoso com 8080        string host   myUri Host      host is  www contoso com

User · Answer

Try like this   Uri GetLeftPart  UriPartial Authority        Defines the parts of a URI for the Uri GetLeftPart method         http   www contoso com index htm date today --  http   www contoso com      http   www contoso com index htm main --  http   www contoso com      nntp   news contoso com 123456 contoso com --  nntp   news contoso com      file   server filename ext --  file   server   Uri uriAddress   new Uri  http   www contoso com index htm search    Console WriteLine  The path of this Uri is  0    uriAddress GetLeftPart UriPartial Authority      Demo

User · Answer

WWW is an alias  so you don t need it if you want a domain  Here is my litllte function to get the real domain from a string  private string GetDomain string url                string   split   url Split               if  split Length  gt  2              return split split Length - 2          split split Length - 1           else             return url

User · Answer

You should construct your string as URI object and Authority property returns what you need

[c#] Get host domain from URL?

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