C#邮箱发送验证码

public static void SendTo(string mailAddress, string subject, string body)
        {

//mailAddress 所要发送的邮箱地址，subject 邮件标题，body邮件内容

//发送邮件所用邮箱（163邮箱）

string Email_Send = Dsis.Core.SysCore.PubFunction.DataFilter(Dsis.Core.SysCore.SysFunction.GetParameterInfo("Email_Send")["PValue"]);

//发送所用邮箱密码

string Email_Password = Dsis.Core.SysCore.PubFunction.DataFilter(Dsis.Core.SysCore.SysFunction.GetParameterInfo("Email_Password")["PValue"]);
            MailMessage message = new MailMessage();

message.From = new MailAddress(Email_Send, "发信人", System.Text.Encoding.UTF8);

//被发送邮箱

message.To.Add(new MailAddress(mailAddress));

//邮件标题

message.Subject = subject;

message.IsBodyHtml = true;
            message.BodyEncoding = System.Text.Encoding.UTF8;

//邮件内容
            message.Body = body;
            message.Priority = MailPriority.High;

SmtpClient client = new SmtpClient("smtp.163.com");

//所用邮箱和密码

client.Credentials = new NetworkCredential(Email_Send, Email_Password);
            client.EnableSsl = true; //必须经过ssl加密 
            try
            {
                client.Send(message);
            }
            catch (Exception ee)
            {
                ShowMsg(ee.ToString());
            }
        }
        static void ShowMsg(string msg)

{ }