RegularExpressionValidator for multiple emails

Question

I\'m validating a textbox for valid email with this:

Answer 1

Try the expression below, which works for me:

((\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*)*([,])*)*

The above code is for ,, separating e-mail addresses.

If you would like to use ; instead of ,, than replace , with ; at the end of the above expression.