Replacing bad characters of a String with bad characters

Question

I just wondered what\'s the easiest way to replace a string characters that must be replaced subsequently.

For example:

var str = \"[Hello World]\";         


        

Answer 1

What about:

str = str.Replace("[", "$1[$2")
         .Replace("]", "$1]$2")
         .Replace("$1", "[")
         .Replace("$2", "]");