matching {{string}} in regex c#

Question

what is the regex for matching a string within two curly brackets as in

{{string}}

result should be string.

Do I have to escape both curly brackets?

Answer 1

No, actually the following should work just fine:

"{{([^}]*)}}"

Edit: As pointed out by dtb the expression above fails for a string containing a single } within the double brackets. To handle this case the following example would do a much better job:

"{{((?:}(?!})|[^}])*)}}"

Edit 2: The simplest solution however would probably be the following:

"{{(.*?)}}"