I use this
@\"^([\\w\\.\\-]+)@([\\w\\-]+)((\\.(\\w){2,3})+)$\"
regexp to validate the email
([\\w\\.\\-]+) - this is f
([\\w\\.\\-]+)
string patternEmail = @"(?\w+@\w+\.[a-z]{0,3})"; Regex regexEmail = new Regex(patternEmail);