发送电子邮件代码

 

一个发送电子邮件的代码，希望对大家有用，

也对自己以后参考参考。

You will need to create one class called EmailProgram like below！

1. using System; 2. using System.Text; 3. using System.Net.Mail; 4. using System.Net.Mime; 5. using System.Text.RegularExpressions; 6. using System.Configuration; 7. using System.Collections; 8. 9. namespace VBForums 10. { 11. public class EmailProgram 12. { 13. /// <summary> 14. /// call this Method to send an Email with attachments 15. /// </summary> 16. /// <param name="emailFrom">From EmailID</param> 17. /// <param name="emailTo">To Email ID</param> 18. /// <param name="emailCC">CC Email ID</param> 19. /// <param name="emailBCC">BCC Email ID</param> 20. /// <param name="subject">Subject</param> 21. /// <param name="body">Body</param> 22. /// <param name="IsBodyHtml">EmailBodyFormat(Default It is false, If It is true EmailBody should in HTML Format)</param> 23. /// <param name="attachmentPath">Attachment File Path</param> 24. /// <returns>If sends successfully returns True otherwise False</returns> 25. public String SendMail(String emailFrom, 26. String emailTo, 27. String emailCC, 28. String emailBCC, 29. String subject, 30. String body, 31. ArrayList attachments, 32. bool IsBodyHtml) { 33. try 34. { 35. bool ValidateFromEmailAddress = ValidateEmailAddress(emailFrom); 36. if (ValidateFromEmailAddress == false) 37. return "Invalid From Email Address: " + emailFrom; 38. bool ValidateToEmailAddress = ValidateEmailAddress(emailTo); 39. if (ValidateToEmailAddress == false) 40. return "Invalid To Email Address: " + emailTo; 41. MailAddress mailFrom = new MailAddress(emailFrom); 42. MailAddress mailTo = new MailAddress(emailTo); 43. MailMessage mailMessage = new MailMessage(mailFrom, mailTo); 44. mailMessage.Subject = subject; 45. mailMessage.Body = body; 46. mailMessage.IsBodyHtml = IsBodyHtml; 47. if (!String.IsNullOrEmpty(emailCC)) 48. { 49. bool ValidateCCEmailAddress = ValidateEmailAddress(emailCC); 50. if (ValidateCCEmailAddress == false) 51. return "Invalid CC Email Address: " + emailCC; 52. 53. mailMessage.CC.Add(emailCC); 54. } 55. if (!String.IsNullOrEmpty(emailBCC)) 56. { 57. bool ValidateBCCEmailAddress = ValidateEmailAddress(emailBCC); 58. if (ValidateBCCEmailAddress == false) 59. return "Invalid BCC Email Address: " + emailBCC; 60. mailMessage.Bcc.Add(emailBCC); 61. } 62. 63. foreach (String attach in attachments) 64. { 65. Attachment attached = new Attachment(attach, MediaTypeNames.Application.Octet); 66. mailMessage.Attachments.Add(attached); 67. } 68. String strSMTPServer = ConfigurationSettings.AppSettings.Get("SMTPServer"); 69. SmtpClient smtpClient = new SmtpClient(strSMTPServer); 70. //smtpClient.Credentials = new NetworkCredential("UserName", "Password");//if credentials needed 71. smtpClient.UseDefaultCredentials = true; 72. if (mailMessage != null) 73. { 74. smtpClient.Send(mailMessage); 75. } 76. return "Message sent to " + emailTo + " at " + DateTime.Now.ToString() + "."; 77. 78. } 79. catch (Exception ex) 80. { 81. return ex.Message.ToString(); 82. } 83. } 84. /// <summary> 85. /// check email address is valid or not 86. /// </summary> 87. /// <param name="emailAddress">email address to validate</param> 88. /// <returns>True if email address is valid</returns> 89. public bool ValidateEmailAddress(string emailAddress) { 90. try 91. { 92. string TextToValidate = emailAddress; 93. Regex expression = new Regex(@"/w+@[a-zA-Z_]+?/.[a-zA-Z]{2,3}"); 94. 95. if (expression.IsMatch(TextToValidate)) 96. { 97. return true; 98. } 99. else 100. { 101. return false; 102. } 103. } 104. catch (Exception) 105. { 106. throw; 107. } 108. } 109. } 110. }

And then you will need to have a main class that calls it.

1. using System; 2. 3. namespace VBForums 4. { 5. class main 6. { 7. public static void Main() { 8. EmailProgram emailProgram = new EmailProgram(); 9. emailProgram.SendMail("[e-mail]", "[e-mail]", "", "", 10. "Subject", "Body can have HTML if you specify it in the last paramater", null, false); 11. }//end main 12. }//end class 13. }//end namespace 14.

 

 

Note that you do need an SMTP server to send out email using this code. There may be free ones there you can use, but I'm not sure.