Find a specific Substring
The .NET framework will do this for you pretty cleanly with the right classes.

For example:

string url = "http://example.free.pl/plus%20violent/Dark%20The%20Suns/All%20Ends%20In%20Silence/";

DirectoryInfo di = new DirectoryInfo( new Uri(url).LocalPath );


The di.Name property contains "All Ends In Silence".