Question

I have a pretty easy (imo) Regular expression which doesn’ translate to C#. RegExr says it works, however testing it in C# doesn’t work… Do I need to change anything to make it work in C#?

RegEx:

/https://subdomain[.1]domain[.1]com/(.*)(ashx|axd)/g

Replace:

http://subdomain.domain.com/$1$2

Input string:

<script src="https://subdomain.domain.com/ScriptResource.axd?d=SQ032obz8ZDKgHbn6XZ3X4xN0iWznAgAxgrdjOtFjVj-yUo-Lk-c2r4ciOs2uasdfjiemr4ciOs2uaGYfeYrYGiemnAQT9UzGoQVKs_JPL8l7TA1LjPYKexOcr4ciOs2uar4ciOs2uaHgpZf-tDxkb_le2NhBN0&amp;t=ffffffffb868b5f4" 
type="text/javascript"></script><script type="text/javascript">
//<![CDATA[
Sys.Application.initialize();
//]]>
</script>

Answer 1

Your regex shouldnt contain / and /g. And instead [.1] write .

As I suspect you only want to change https into http you can just do that:

s = s.Replace("https:", "http:");

In case you want to replace the domain you can do that with regex:

  s = Regex.Replace(s, "https://[^/]+", "http://yourreplaced.domain.com", RegexOptions.Multiline);