自動發送郵件

一、首先需要配置web.config檔案：
<system.net>
    <mailSettings>
      <smtp from="Emailname">
        <network host="smtp.163.com" userName="Emailname" password="Emailpassword"
    port="25" defaultCredentials="false"/>
      </smtp>
    </mailSettings>
</system.net>二、然後編寫發送郵件的函數：
/**//// <summary>
    /// 郵件發送方法(帶附件)
    /// </summary>
    /// <param name="mailto">收件者地址。如：mailto:receiver@163.com%3C/param>
    /// <param name="mailsubject">郵件標題</param>
    /// <param name="mailbody">郵件內文</param>
    /// <param name="mailFrom">郵件發送人地址。如：mailto:sender@163.com%3C/param>
    /// <param name="list">附件路徑</param>
    /// <returns></returns>
    public bool MySendMail(string mailto, string mailsubject, string mailbody, string mailFrom, ArrayList list)
    ...{
        try
        ...{
            //郵件發送人地址
            System.Net.Mail.MailAddress from = new System.Net.Mail.MailAddress(mailFrom);
             //如test@163.com,初步測試，用test@sina.com不行，用163的郵件伺服器，就必須用163郵箱的使用者名稱
            //收件者地址
            System.Net.Mail.MailAddress to = new System.Net.Mail.MailAddress(mailto);//如test@tom.com
            System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage(from, to);
            mail.Subject = mailsubject;
            mail.Body = mailbody;

            //以下設定伺服器
            System.Net.Mail.SmtpClient mySmth = new System.Net.Mail.SmtpClient();
            //以下為增加附件
            int count = list.Count;
            for (int i = 0; i < count; i++)
            ...{
                System.Net.Mail.Attachment data = new System.Net.Mail.Attachment(list[i].ToString());
                mail.Attachments.Add(data);
            }
            mySmth.Send(mail);
            mail.Dispose();
            return true;
        }
        catch
        ...{
            return false;

        }
    }
三、最後就是對函數的調用了：

//自動發送郵件
string mailSubject = "會員註冊確認函";
string mailBody = "本文內容。";
string mailFrom = ConfigurationManager.AppSettings["SendMail"];
ArrayList List = new ArrayList();
List.Add(Server.MapPath(ConfigurationManager.AppSettings["SendMailText"]));
if (MySendMail(this.txtEmail.Text, mailSubject, mailBody, mailFrom, List))
...{
  ShowAndRedirect(this, "註冊確認函已經發送到你的郵箱，請查收!", "index.aspx");
}
else
...{
   ShowAndRedirect(this, "郵件發送失敗!", "index.aspx");
   return;
}

本文來自CSDN部落格，轉載請標明出處：http://blog.csdn.net/h1jie/archive/2008/01/21/2057212.aspx