Thank you for any help with this problem with Regex and what it
perceives to be an invalid escape sequence.
(1) I use this Regex to validate a password:
(?!^[0-9]*$)(?!^[a-zA-Z]*$)^([a-zA-Z0-9]{6,10})(?=...@#$%^&+=]).*
$ // Length: 6 to 10, letters & numbers
it works, but it does not allow the use of: @#$%^&+=
(2) So I tried: ^.*(?=.{10,})(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=...@#$%^&
+=]).*$
this works in Javascript,
but in C#, the \d part of the statement does not compile: "Invalid
escape sequence"
(3) This compiles:
^.*(?=.{10,})(?=.*" + "\\" + "d)(?=.*[a-z])(?=.*[A-Z])(?=...@#$%^&
+=]).*$
but does not work as it compiles to:
^.*(?=.{10,})(?=.*\\d)(?=.*[a-z])(?=.*[A-Z])(?=...@#$%^&+=]).*$
( an extra backslash before \d)(? )
(4) So I tried: (?!^[0-9]*$)(?!^[a-zA-Z]*$)^([a-zA-Z0-9]{6,10})(?=...@#
$%^&+=])(?=...@#$%^&+=]).*$
which is #1 above with ".*$" replaced with "(?=...@#$%^&+=]).*$"
It compiles, but does not work, not even for as password as simple as:
Aabbcc5
