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

In the second version, I guess proxyStr appears twice because you're inserting it once more. Try

string s2 = Regex.Replace(s, "((?<=src='/+))", proxyStr);