@"^.*(?=.{10,})(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=...@#$%^&+=]).*$"
compiles to:
@"^.*(?=.{10,})(?=.*\\d)(?=.*[a-z])(?=.*[A-Z])(?=...@#$%^&+=]).*$"
= the compiler is adding an extra backslash in front of \d)(?
I don't know how to prevent this from happening
On Aug 17, 12:15 am, Cerebrus <[email protected]> wrote:
> In C#, you need to escape backslashes with another backslash. I
> recommend the use of verbatim string literals for complicated strings
> like this one. (prefix with "@").
>
> On Aug 17, 3:42 am, xzzy <[email protected]> wrote:
>
>
>
> > 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
