ASP.NET日常开发随手记------发送邮件-优快云博客

本文详细介绍了如何通过C#编程语言，利用SMTP协议和.NET框架，为QQ邮箱发送带有附件的邮件，包括设置发件人、收件人、邮件主题、正文及SMTP服务器参数。

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/// <summary>
/// 发送邮件（以QQ邮箱为例）
/// </summary>
/// <param name="MailAddress">QQ邮箱地址</param>
/// <param name="PassWord">开启SMTP生成的密码</param>
/// <param name="SMTP">SMTP服务器 如 腾讯：smtp.qq.com</param>
/// <param name="Port">端口 如腾讯:465</param>
/// <param name="Mail">MailMessage对象</param>
public void SendEmail(string MailAddress, string PassWord, string SMTP, int Port, MailMessage Mail)
{
       SmtpClient smtpclient = new SmtpClient();
       //发件邮箱和密码 ,注意这里要与发件人地址的邮箱一致
       smtpclient.Credentials = new System.Net.NetworkCredential(MailAddress, PassWord);
       smtpclient.DeliveryMethod = SmtpDeliveryMethod.Network;
       smtpclient.Host = SMTP;//邮箱的站点，不同邮箱这个位置不同
       smtpclient.Port = Port;
       smtpclient.EnableSsl = false;
       smtpclient.Send(Mail);
       //释放资源
       Mail.To.Clear();
       Mail.Dispose();
       smtpclient.Dispose();
}

调用

MailMessage myMail = new MailMessage();
myMail.From = new MailAddress(MailAddress, "epms");
myMail.Subject = string.Format("{0}分公司{1}内控预警指标增量明细", region.GetText(), DateTime.Now.ToString("yyyy年MM月dd日"));
myMail.Body = string.Format("截止{0}，{1}分公司各项指标增量明细，详见附件。", DateTime.Now.ToString("yyyy年MM月dd日"), region.GetText());
myMail.IsBodyHtml = false;//设置内容是否为html格式，true:是,false：否
System.Net.Mail.Attachment mailAttach_1 = new Attachment(fileName);//附件
myMail.Attachments.Add(mailAttach_1);
if (!string.IsNullOrEmpty(bcc.DepartmentalLeader))
{
    IList<int> DepartmentalLeaderId = bcc.DepartmentalLeader.SplitInt(",").ToList();
    foreach (var id in DepartmentalLeaderId)
    {
        UserV2 user = _userQuerySrv.GetUserById(id);
        if (user != null)
        {
            myMail.To.Add(new MailAddress(user.Email));//emial 客户端邮箱地址
        }
    }
}
if (!string.IsNullOrEmpty(bcc.Monitor))
{
    IList<int> MonitorId = bcc.Monitor.SplitInt(",").ToList();
    foreach (var id in MonitorId)
    {
        UserV2 user = _userQuerySrv.GetUserById(id);
        if (user != null)
        {
            myMail.To.Add(new MailAddress(user.Email));//emial 客户端邮箱地址
        }
    }
}
SendEmail(MailAddress, PassWord, "172.16.121.102", 25, myMail);