Why is “$1” ending up in my Regex.Replace() result?

Question

I am trying to write a regular expression to rewrite URLs to point to a proxy server.

bodystring = Regex.Replace(bodystring, \"(src=\'/+)\", \"$1\" + proxySt         


        

Answer 1

Based on dasblinkenlights answer (already +1) the solution is this:

bodystring = Regex.Replace(bodystring, "(src='/+)", "${1}" + proxyStr);

This ensures that the group 1 is used and not a new group number is build.