利用System.Net.Mail 的SmtpClient发送邮件

原文: 利用System.Net.Mail 的SmtpClient发送邮件

几个月前总结过关于Jmail发送邮件,当时用Jmail发送邮件发送速度有点慢(可能对Jmail了解不是很多).现在改为用微软提供的SmtpClient来发送邮件。

MailMessage 用于构造可以使用SmtpClient类传输到Smtp服务器以便传递的电子邮件;

使用MailMessage初始化MailMessage对象时,可以将电子邮件的发信人,收件人,主题和正文指定为参数。这些参数也可能被设置,或者使用MailMessage对象上的属性访问。

常用的属性:

附件    Attachments

密送    bcc

抄送   cc

Content-Type  bodyEncoding/subjectEncoding

邮件正文  body

收件人  To

发件人  From

Subject  sujbect

使用AlternateViews属性指定一个电子邮件不同格式的副本,如果发送HTML格式的邮件,可能希望同时提供邮件的纯文本格式,以防止一些收件人使用的电子邮件阅读程序无法显示html内容,另外这是我们使用body属性指定文本格式。

下面用两种方式发邮件:

Send
 1   ArrayList list = new ArrayList();

 2         list.Add("*****@neotrident.com");

 3         list.Add("*****@gmail.com");

 4         list.Add("*****@126.com");

 5         list.Add("*****@qq.com");

 6         list.Add("*****@yahoo.com.cn");

 7         list.Add("*****@tarena.com.cn");

 8         list.Add("*****@me.com");

 9         MailMessage mailMessage = new MailMessage();

10         for (int i = 0; i < list.Count; i++)

11         {

12             MailAddress toAddress = new MailAddress(list[i].ToString());

13             mailMessage.To.Add(toAddress);//收件人

14             mailMessage.CC.Add(toAddress);//抄送

15             mailMessage.Bcc.Add(toAddress);//密送

16         }

17         string fileName = @"E:\2012年Q2新员工培训.pdf";

18         Attachment attachment = new Attachment(fileName);

19         

20         mailMessage.Attachments.Add(attachment);

21         mailMessage.From = new MailAddress("发件人邮箱地址", "**科技有限公司");

22         mailMessage.Subject = "hello";

23         mailMessage.SubjectEncoding = System.Text.Encoding.Unicode;

24         mailMessage.Body = "hello world";

25         mailMessage.BodyEncoding = System.Text.Encoding.Unicode;

26         string body = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">";

27         body += "<HTML><HEAD><META http-equiv=Content-Type content=\"text/html; charset=utf-8\">";

28         body += "</HEAD><BODY><DIV><FONT face=Arial color=#ff0000 size=2>this is some HTML text";

29         body += "</FONT></DIV></BODY></HTML>";

30         ContentType type = new ContentType("text/html");

31         AlternateView view = AlternateView.CreateAlternateViewFromString(body, Encoding.Unicode, "text/html");

32         mailMessage.AlternateViews.Add(view);

33         SmtpClient client = new SmtpClient("smtp.126.com");

34         client.Credentials = new System.Net.NetworkCredential("发件人邮箱地址", "邮箱密码");

35         client.Send(mailMessage);

第二种利用:SendAsync,

将指定的电子邮件发送到 SMTP 服务器以便传递。 此方法不会阻止调用线程,并允许调用方将对象传递给操作完成时调用的方法。第二种方式要在页面中设置Async="true"

SendAsync
 1  protected void Page_Load(object sender, EventArgs e)

 2     {

 3         ArrayList list = new ArrayList();

 4         list.Add("***@neotrident.com");

 5         list.Add("***@gmail.com");

 6         list.Add("***@126.com");

 7         list.Add("***@qq.com");

 8         list.Add("***@yahoo.com.cn");

 9         list.Add("***@tarena.com.cn");

10         list.Add("***@me.com");

11         MailMessage mailMessage = new MailMessage();

12         for (int i = 0; i < list.Count; i++)

13         {

14             MailAddress toAddress = new MailAddress(list[i].ToString());

15             mailMessage.To.Add(toAddress);//收件人

16             mailMessage.CC.Add(toAddress);//抄送

17             mailMessage.Bcc.Add(toAddress);//密送

18         }

19         string fileName = @"E:\2012年Q2新员工培训.pdf";

20         Attachment attachment = new Attachment(fileName);

21         

22         mailMessage.Attachments.Add(attachment);

23         mailMessage.From = new MailAddress("发件人地址", "**科技有限公司");

24         mailMessage.Subject = "hello";

25         mailMessage.SubjectEncoding = System.Text.Encoding.Unicode;

26         mailMessage.Body = "hello world";

27         mailMessage.BodyEncoding = System.Text.Encoding.Unicode;

28         string body = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">";

29         body += "<HTML><HEAD><META http-equiv=Content-Type content=\"text/html; charset=utf-8\">";

30         body += "</HEAD><BODY><DIV><FONT face=Arial color=#ff0000 size=2>this is some HTML text";

31         body += "</FONT></DIV></BODY></HTML>";

32         ContentType type = new ContentType("text/html");

33         AlternateView view = AlternateView.CreateAlternateViewFromString(body, Encoding.Unicode, "text/html");

34         mailMessage.AlternateViews.Add(view);

35         SmtpClient client = new SmtpClient("smtp.126.com");

36         client.Credentials = new System.Net.NetworkCredential("发件人地址", "密码");

37         //client.Send(mailMessage);

38         client.SendCompleted += new SendCompletedEventHandler(client_SendCompleted);

39         string userState = "test message1";

40         client.SendAsync(mailMessage, userState);

41         if (mailsent == false)

42         {

43             client.SendAsyncCancel();

44         }

45         Response.Write("Goodbye");

46 

47     }

48     static bool mailsent = false;

49     void client_SendCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)

50     {

51         string token = (string)e.UserState;

52         if (e.Cancelled)

53         {

54             Response.Write(string.Format("{0} Send canceled.",token));

55         }

56         if (e.Error != null)

57         {

58             Response.Write(string.Format("[{0}] {1}", token, e.Error));

59         }

60         else

61         {

62             Response.Write("Message sent");

63         }

64         mailsent = true;

65     }

 

就这可以用2种方式,以上代码包括发送附件,to,bcc,cc,正文内容的不同格式(html)

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