C # Send e-mail (async) Z

1. Regular expressions for validating e-mail messages

1. String emailstr = @ "^ ([\w-\.] +) @ ((\[[0-9]{1,3}\. [0-9] {1,3}\. [0-9] {1,3}\.) | ([\w-]+\.) +)) ([a-za-z]{2,4}| [0-9] {1,3}) (\]?) $";

2. <summary>
4. Send e-mail asynchronously
6. </summary>
8. <param name= "Fromemail" > Sender email </param>
10. <param name= "Frompwd" > Sender email password </param>
12. <param name= "Toemail" > Receiver email </param>
14. <param name= "Subject" > Mail title </param>
16. <param name= "Body" > E-mail inside empty </param>
18. <param name= "Emailtype" > Mail type </param> smtp.163.com.cn; smtp.qq.com.cn;  smtp.126.com.cn; smtp.sina.com.cn
20. private void Sendemailasync (String fromemail, String frompwd, String toemail, string subject, String body, String Emailtyp E
22. {
24. MailAddress addrfrom = new MailAddress (Fromemail, Fromemail);
26. MailAddress Addrto = new MailAddress (Toemail, Toemail);
28. MailMessage mm = new MailMessage (Addrfrom, Addrto);
30. Mm. bodyencoding = Encoding.UTF8;
32. Mm. Isbodyhtml = true;
34. Mm. Subject = Subject;
36. Mm. BODY = body;
40. if (!string. IsNullOrEmpty (Attfile))
42. {
44. Attachment att = new Attachment (Attfile, MediaTypeNames.Application.Octet);
46. Contentdisposition cd = Att. Contentdisposition;
48. Cd. CreationDate = File.getcreationtime (attfile);
50. Cd. Modificationdate = File.getlastwritetime (attfile);
52. Cd. Readdate = File.getlastaccesstime (attfile);
54. Mm. Attachments.Add (ATT);//Add Attachments
56. }
60. NetworkCredential NC = new NetworkCredential (Fromemail, frompwd);
62. SmtpClient smtp = new SmtpClient (emailtype);
64. Smtp. useDefaultCredentials = false;
66. Smtp. Credentials = NC;
68. Smtp. Enablessl = false;
70. Smtp. Deliverymethod = Smtpdeliverymethod.network;
72. Smtp. Sendcompleted+=new Sendcompletedeventhandler (smtp_sendcompleted);
74. Smtp. SendAsync (mm, "OK");
76. }
80. void Smtp_sendcompleted (object sender, AsyncCompletedEventArgs e)
82. {
84. if (e.userstate.tostring () = = "OK")
86. MessageBox.Show ("Send successfully!", "hint", MessageBoxButtons.OK, MessageBoxIcon.Information);
88. }

C # Send e-mail (async) Z