nature_net.user_controls.signup.IsValid C# (CSharp) Метод

        private bool IsValid(string emailaddress)
        {
            try
            {
                System.Net.Mail.MailAddress m = new System.Net.Mail.MailAddress(emailaddress);
                return true;
            }
            catch (FormatException)
            {
                return false;
            }
        }