Remove text from string until it reaches a certain character

Question

I\'m having a issue trying to figure out this. I need to \"fix\" some links, here is an example:

1. www.site.com/link/index.php?REMOVETHISHERE
2. www.site.c

Answer 1

 string s = @"www.site.com/link/index.php?REMOVETHISHERE";
 s = s.Remove( s.LastIndexOf('?') );
 //Now s will be simply "www.site.com/link/index.php"

should do it