Sending email through Gmail SMTP server with C#

public int SendMail()

    {

        int i = 0;

        //System.Web.Mail.MailMessage objMsg = new System.Web.Mail.MailMessage();

        try

        {

            // Smtp configuration

            string smtpServer = ConfigurationManager.AppSettings["SmtpServer"];

            int smtpserverport = Convert.ToInt32(ConfigurationManager.AppSettings["smtpserverport"]);

            string userName = ConfigurationManager.AppSettings["FromMailId"];

            string password = ConfigurationManager.AppSettings["FromIdPassword"];

            int Port = Convert.ToInt32(ConfigurationManager.AppSettings["Port Number"]);

            string SMTPserverUserName = ConfigurationManager.AppSettings["SMTPServerUserName"];

            string SMTPserverPwd = ConfigurationManager.AppSettings["SMTPServerPassword"];

            // Mail initialization

            System.Net.Mail.MailMessage mailMsg = new System.Net.Mail.MailMessage();

            mailMsg.From = new System.Net.Mail.MailAddress(ConfigurationManager.AppSettings["FromMailId"], "HIHL-1056", System.Text.Encoding.UTF8);

            // mailMsg.mail

            mailMsg.To.Add("From Address");

            mailMsg.Subject = @"XYZ";

            mailMsg.Body = "Body";

            //MailAttachment att = new MailAttachment("C:\\Documents and Settings\\xxx.doc");

            //mailMsg.Attachments.Add(att);

            mailMsg.BodyEncoding = System.Text.Encoding.UTF8;

            mailMsg.IsBodyHtml = true;

            mailMsg.Priority = System.Net.Mail.MailPriority.High;

            //The SMTP requires Authentication so the credentials has to be sent

            System.Net.NetworkCredential mailAuthentication = new System.Net.NetworkCredential("Usrename", "password");

            //Add the Creddentials

            System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();

            client.Port = smtpserverport;

            client.Host = smtpServer;

            client.EnableSsl = false;

            client.UseDefaultCredentials = false;

            client.Credentials = mailAuthentication;

            //client.SendCompleted += new SendCompletedEventHandler(client_SendCompleted);

            //client.SendCompleted += new System.Net.Mail.SendCompletedEventHandler(client_SendCompleted);

            object userState = mailMsg;

            try

            {

                client.Send(mailMsg);

                //MessageBox.Show("Emailsend successfully");

                i = 1;

                return i;

            }

            catch (System.Net.Mail.SmtpException exx)

            {

                i = 0;

                return i;

            }

        }

        catch (Exception ex)

        {

        }

        return i;

    }