C# Regex - Accept spaces in a string -


i have application needs verifications fields. 1 of them last name can composed of 2 words. in regex, have accept these spaces tried lot of things did'nt find solution.

here regex : 

@"^[a-za-zàéèêçñ\s][a-za-zàéèêçñ-\s]+$"

the \s spaces not work , got error message : 

parsing "^[a-za-zàéèêçñ\s][a-za-zàéèêçñ-\s]+$" - cannot include class \s in character range.

any idea guys?

- denotes character range, use a-z describe any character between , z. regex uses ~n-\s engine tries interpret any character between ~n , \s -- , notices, \s doesn't make whole lot of sense there, because \s abbreviation whitespace character.

that's error comes from.

to rid of this, should put - @ end of character class, if want include - literal character:

@"^[a-za-zàéèêçñ\s][a-za-zàéèêçñ\s-]+$"

this way, engine knows \s- not character range, 2 characters \s , - seperately.

the other way escape - character:

@"^[a-za-zàéèêçñ\s][a-za-zàéèêç\-\s]+$"

so engine interprets ~n\-\s not character range, any of characters ~n, - or \s. personally, though try avoid escaping possible, because imho clutters , needlessly stretches expression in length.


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