Member 是数据实体,穿过来的也就是当前注册用户的信息. 存储的数据一定要有邮箱信息
 
private void SendAuthCodeToMember(Member member)
        {
            string mailBody = System.IO.File.ReadAllText(Server.MapPath("~/MemberRegisterEMailTemplate.html")); //发送的内容网址
            mailBody = mailBody.Replace("{{Name}}",member.Name);//用户名及是邮箱->发送的目标
            mailBody = mailBody.Replace("{{RegisterOn}}", member.RegisterOn.ToString("F"));
            var auth_url = new UriBuilder(Request.Url)
            {
                Path = Url.Action("ValidateRegister",new { id=member.AuthCode}),  //ValidateRegister 点击激活链接时返回的方法,(自定义,一般是要自己在去数据库取回来数据进行对比然后激活成功!)
                Query=""
            };
            mailBody = mailBody.Replace("{{AUTH_URL}}", auth_url.ToString());
 
            try {
                //SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
                SmtpClient SmtpServer = new SmtpClient()
                {
                    Host = "smtp.163.com",
                    UseDefaultCredentials = true,
                    DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network,
                    Credentials = new NetworkCredential("***@163.com", "密码***")//代理发送的网易账户
                    //EnableSsl = true
                };
 
                MailMessage mail = new MailMessage()
                {
                    From = new MailAddress("***@163.com")//代理发送的网易账户
                };
                mail.To.Add(member.Email);
                mail.Subject = "会员注册确认信";
                mail.SubjectEncoding = System.Text.Encoding.UTF8;
                mail.BodyEncoding = System.Text.Encoding.UTF8;
                mail.Body = mailBody;
                mail.Priority = System.Net.Mail.MailPriority.High;
                mail.IsBodyHtml = true ;
 
                SmtpServer.Send(mail);
            }
            catch(Exception ex) {
                throw ex;
            }
        }
MemberRegisterEMailTemplate.html 大概这样的
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title></title>
</head>
<body>
    <h1>会员注册确认信</h1>
    <p>亲爱的{{Name}}你好:</p>
    <p>
        由于您在{{RegisterOn}}注册成为本站会员,为了完成会员注册程序,我们请您点击
        一下链接用以确认你的Email地址是有效的:
        <br/>
        <a href="{{AUTH_URL}}" target="_blank">{{AUTH_URL}}</a>
    </p>
    <a>谢谢</a>
    <p></p>
</body>
</html>