Tuesday, May 1, 2012

How to valid email address by custom validation control and JavaScript regular expression in ASP.NET webform?

     <script type="text/javascript">
        function EmailValidation(sender, args) {
            var email = $("#TextBoxEmailAddress").val();
            var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
            args.IsValid = re.test(email);
        }
    </script>
    <asp:TextBox ID="TextBoxEmailAddress" runat="server" ClientIDMode="Static"></asp:TextBox>
    <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="Invalid email"
        ClientValidationFunction="EmailValidation" ControlToValidate="TextBoxEmailAddress"></asp:CustomValidator>

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