c# - Best way to replace tokens in a large text template

Question

I have a large text template which needs tokenized sections replaced by other text. The tokens look something like this: ##USERNAME##. My first instinct is just to use String.Replace(), but is there a better, more efficient way or is Replace() already optimized for this?

Answer 1

System.Text.RegularExpressions.Regex.Replace() is what you seek - IF your tokens are odd enough that you need a regex to find them.

Some kind soul did some performance testing, and between Regex.Replace(), String.Replace(), and StringBuilder.Replace(), String.Replace() actually came out on top.