C# SmtpClient小例子

一个在C#中发送邮件的小例子

引用的命名空间

using System.Net.Mail;

SmtpClient sc = new SmtpClient("smtp.163.com");
    sc.Credentials = new NetworkCredential("userName", "password");
    MailMessage mm = new MailMessage("from@163.com", "to@qq.com");
    mm.Subject = "主题";
    mm.Body = "邮件正文";
    Attachment tt = new Attachment(HttpRuntime.AppDomainAppPath + "a.txt");
    mm.Attachments.Add(tt);

    sc.Send(mm);