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

To remove last "?" and everything after it:

    string input = @"www.site.com/link/index.php?REMOVETHISHERE";
    input = input.Remove(input.LastIndexOf('?'));

    OR

    string input = @"www.site.com/link/index.php?REMOVETHISHERE";
    input = input.Substring(0, input.LastIndexOf('?'));

Now the output will be:

www.site.com/link/index.php