C# QQ邮箱授权码发送邮件

using System.Net;
using System.Web.Mail;

    public class SendMail
    {
        /// <summary>
        /// 发送Email
        /// </summary>
        public static void Send(string strTo, string Subject, string Body)
        {
            string smtpserver = "smtp.qq.com";
            string userName = "";
            string pwd = "";
            string nickName = "服务器在线预警系统";
            string strFrom = "";//收件人
            sendMail(smtpserver, userName, pwd, nickName, strFrom, strTo, Subject, Body);
        }

        /// <summary>
        /// 发送电子邮件
        /// </summary>
        /// <param name="smtpserver">SMTP服务器</param>
        /// <param name="userName">登录帐号</param>
        /// <param name="pwd">登录密码</param>
        /// <param name="nickName">发件人昵称</param>
        /// <param name="strFrom">发件人</param>
        /// <param name="strTo">收件人</param>
        /// <param name="Subject">主题</param>
        /// <param name="Body">内容</param>
        public static bool sendMail(string smtpserver, string userName, string pwd, string nickName, string strFrom, string strTo, string Subject, string Body)
        {
            System.Web.Mail.MailMessage mail = new System.Web.Mail.MailMessage();
            try
            {
                pwd = DataEncrypt.Decrypt(pwd, "KYCMS");

                mail.To = strTo;
                mail.From = strFrom;
                mail.Subject = Subject;
                mail.BodyFormat = System.Web.Mail.MailFormat.Html;
                mail.Body = Body;

                mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1"); //身份验证
                mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", mail.From); //邮箱登录账号，这里跟前面的发送账号一样就行
                mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", pwd); //这个密码要注意：如果是一般账号，要用授权码；企业账号用登录密码
                mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", 465);//端口
                mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", "true");//SSL加密
                SmtpMail.SmtpServer = smtpserver;    //企业账号用smtp.exmail.qq.com
                SmtpMail.Send(mail);
                return true;

                //邮件发送成功
            }
            catch (Exception ex)
            {
                //失败，错误信息：ex.Message;
            }
            return false;
        }
    }