How to add Email Id 's list to message.To.Add()?

SmtpClient smtpClient = new SmtpClient();
                      MailMessage message = new MailMessage();
                      try
                      {
                          StringBuilder sb = new BAL.PageContent().EmailList();
                          MailAddress fromAddress = new MailAddress("info@captorsolutions.com");
                          message.From = fromAddress;//here you can set address
                          message.To.Add(sb); //here you can add multiple to
                          message.Subject = "Feedback";//subject of email
                          message.CC.Add("cc@site.com");//ccing the same email to other email address
                          message.Bcc.Add(new MailAddress("bcc@site.com"));//here you can add bcc address
                          message.IsBodyHtml = false;//To determine email body is html or not
                          message.Body = @"Plain or HTML Text";
                          smtpClient.Send(message);