C # uses a regular whole word matching lookup replacement (Google keyword:c# Regex Whole Word Replace)

When making a gadget that Protoc-gen-lua a local variable into a Table for the Lua file generated for the build, it is necessary to replace the string frequently, but the replace of string is only a mechanical replacement, and all I need is a whole word match replacement, so have to look for the regular way, Google is still very strong, many friends have related solutions, the following a very simple.

static string Replacewholeword (string original, string wordtofind,string replacement, RegexOptions RegexOptions = Regexoptions.none)
        {
            string pattern = String.Format (@ "\b{0}\b", wordtofind);
            string ret = Regex.Replace (original, pattern, replacement, regexoptions);
            return ret;
        }