c# - Insert a Newline Character using Regex Replace

Question

I am trying to insert a newline character using a regex replace like so:

strFile = Regex.Replace(
    strFile,
    @"(FA|BO)s+(d{3}-d+)(s+)(.*?)(s+)(d+,*d*.d+)s*(FA|BO)s+(d{3}-d+)(s+)(.*?)(s+)(d+,*d*.d+)s*",
    @"$2&$4&$6
$8&$10&$12"
)

but I end up with (literally) word word rather than an actual newline.

What am I doing wrong?

Answer 1

By using the @"" string literal for the replacement string, you're disabling the escape character parsing. If you make the change to the second string to be a normal string, since you don't have any characters you need to maintain, it'll work as you're expecting.

strFile = Regex.Replace(
    strFile, 
    @"(FA|BO)s+(d{3}-d+)(s+)(.*?)(s+)(d+,*d*.d+)s*(FA|BO)s+(d{3}-d+)(s+)(.*?)(s+)(d+,*d*.d+)s*",
    "$2&$4&$6
$8&$10&$12");