邮件定时发送功能

【IT168技术文档】

  建立两个xml文档 取名为(email.xml->保存邮件内容;user.xml->保存邮件地址)
  email.xml

1<?xml version="1.0" encoding="utf-8"?>
2<Emails>
3  <Email>
4    <ID>1</ID>
5    <Header>测试邮件</Header>
6    <Content>此邮件为测试邮件，若发送失败还请谅解 谢谢</Content>
7  </Email>
8</Emails>

  user.xml

1<?xml version="1.0" encoding="utf-8"?>
2<Users>
3  <User>
4    dirfox1477@gmail.com
5  </User>
6</Users>

  global.asax

1<%@ Application Language="C#" %>
2<%@ Import Namespace="System.Data" %>
3<%@ Import Namespace="System.Data.SqlClient" %>
4<%@ Import Namespace="System.Xml" %>
5<%@ Import Namespace="System.Web" %>
6<%@ Import Namespace="System.Net" %>
7
8<script runat="server">
9
10    private string email = HttpContext.Current.Server.MapPath("email.xml");
11    private string user = HttpContext.Current.Server.MapPath("user.xml");
12    void Application_Start(object sender, EventArgs e)
13    {
14        Application["sendemail"] = true;
15        // 應用程式啟動時執行的程式碼
16        System.Timers.Timer timer = new System.Timers.Timer();
17        timer.Interval = 1000*60*5;//5分钟发送一次
18        timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);
19        timer.Enabled = (Boolean)Application["sendemail"];
20    }
21
22    void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
23    {
24        string _title = string.Empty, _content = string.Empty;
25        System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage();
26        XmlDocument doc = new XmlDocument();
27        doc.Load(email);
28        XmlNode node = doc.SelectSingleNode("//Emails/Email[ID='1']");
29        _title = node["Header"].InnerText;
30        _content = node["Content"].InnerText;
31        doc.Load(user);
32        DataSet ds1 = new DataSet();
33        reader = new System.IO.StringReader(doc.SelectSingleNode("//Users").OuterXml);
34        ds1.ReadXml(reader);
35        reader.Close();
36        foreach (DataRow row in ds1.Tables[0].Rows)
37        {
38            message.CC.Add(Convert.ToString(Convert.ToString(row[0]).Replace("\r\n","")));
39        }
40        ds1.Dispose();
41        message.Subject = _title;
42        message.Body = _content;
43        message.SubjectEncoding=Encoding.GetEncoding("gb2312");
44        message.BodyEncoding = Encoding.Default;
45        System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
46        client.Host = "smtp.xx.com";
47        client.Credentials = new NetworkCredential("username", "password");
48        client.Send(message);
49        message.Dispose();
50    }
51
52</script>