C# Remove URL from String

Question

This seems like a really easy one but everything I try doesn't seem to work

say I have the following string:

string myString = "http://www.mysite.com/folder/file.jpg";

How can I process that to remove the URL and just leave "file.jpg" as the string value?

Thanks!

Kris

What would you like in the case of, e.g., http://example.com/test.php?key=val ? Or http://example.com/test.htm#section1 ? — Domenic
– Domenic, Commented Dec 1, 2010 at 0:37

Matthew Whited · Accepted Answer · 2010-12-01 00:56:41Z

10

You can always use System.IO.Path methods

string myString = "http://www.mysite.com/folder/file.jpg";
string fileName = Path.GetFileName(myString); // file.jpg

If you do want to process more complex URIs you can pass it thought the System.Uri type and grab the AbsolutePath

string myString = "http://www.mysite.com/folder/file.jpg?test=1";
Uri uri = new Uri(myString);
string file = Path.GetFileName(uri.AbsolutePath);

edited Dec 1, 2010 at 0:56

answered Dec 1, 2010 at 0:46

Matthew Whited

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6 Comments

Metro Smurf Over a year ago

This is one of my favorite hacks :) Use it all the time for parsing network ID's.

LukeH Over a year ago

Be aware that the separator characters used by Path.GetFileName are platform-dependent, so there's no guarantee that / will be in that set on every possible platform. (Having said that, I'm not aware of any platform where .NET runs that doesn't include / in the set.)

Matthew Whited Over a year ago

At the same time there is no promise that / is the correct delimting character for a URI. Path being dependant on the platform should get the correct Slash (as a note it supports both / and ``)... at least in the Microsoft version.

LukeH Over a year ago

@Matthew: RFC2396 specifies that path segments in a URI are always delimited by /.

Matthew Whited Over a year ago

(Besides, if an RFC says to use /... wouldn't that imply that all versions of Path.GetFileName(...) would handle /)

|

LukeH · Accepted Answer · 2010-12-01 00:37:14Z

4

string lastPart = myString.Substring(myString.LastIndexOf('/') + 1);

answered Dec 1, 2010 at 0:37

LukeH

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