A cool snippet for validating multiple email addresses

[Malikarjuna Chakravadhanula]

Lot of times, i have noticed that we can enter multiple email addresses in a texbox or label. But the challenging thing about such a facility is validating them. What i mean is making sure they are valid email address. Here is a cool snippet which lets us do the validation. There are number of ways we can do this. I will mention a couple of them over here.

Method 1: We can use a JavaScript and a Regex Expression.

function checkEmailValid (Form,Field)

{
var emailCheck==/^[A-Z0-9\._%-]+@[A-Z0-9\.-]+\.[A-Z]{2,4}(?:[,;][A-Z0-9\._%-]+@[A-Z0-9\.-]+\.[A-Z]{2,4})*$/i;
var emailvalue=eval("document."+Form+"."+Field+".value");
if (!(emailCheck.test(emailValue2))) {
return false;
}else{
return true;
}


Method 2; This is very simple, I am using Asp.net 2.0 and C#. We can use the Regular Expression Control like this.


ValidationExpression="^(\s*,?\s*[0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,9})+\s*$" ErrorMessage="Please enter a valid email." />

Just thought would share this.......Any comments or Suggestion are welcome