We have the server-side validation working fine, but now we need to add some client-side validation via Java Script. Here's what we have so far: ID="Custom Validator To" runat="server" Client Validation Function="validate To" Control To Validate="Text Box To" Display="Dynamic" Error Message="Invalid e-mail address or addresses.E-mail address must be in a standard format ([email protected]). Though I would go with this method to keep the semantics as you said, and simply use validation on the server side as well just in case someone tries to submit an email like "[email protected]".Just as a note, you should always validate on the server side for security reasons anyway, as client side validation can be bypassed very easily.VTypes is a singleton with private variables and email is one of them.In the override (without copying the whole thing) we cannot access it. VTypes.email() does what we want, so we can use that instead.We need to validate that each individual e-mail address entered is a valid e-mail address format.
Often this results in to underutilization of Regular Expression and true power is not harnessed.But what if I told you there were a way to determine whether or not an email is valid without resorting to regular expressions at all? The activation email is a practice that’s been in use for years, but it’s often paired with complex validations that the email is formatted correctly.It’s surprisingly easy, and you’re probably already doing it anyway. If you’re going to send an activation email to users, why bother using a gigantic regular expression?Using Regular Expressions, it is simple to search for a specific word or string of characters.Almost every editor on every computer system can do this.