Replace single backslash with double backslash

Question

It seems simple enough, right? Well, I don\'t know.

Here\'s the code I\'m trying:

input = Regex.Replace(input, \"\\\\\", \"\\\\\\\\\\\\\");
         


        

Answer 1

If you want to replace one backslash with two, it might be clearer to eliminate one level of escaping in the regular expression by using @"..." as the format for your string literals, also known as a verbatim string. It is then easier to see that

string output = Regex.Replace(input, @"\\", @"\\");

is a replacement from \ to \\.