不能發送電子郵件（smtp）

我正在做我的功課，我點擊一個按鈕「驗證我」後，必須發送電子郵件驗證。不能發送電子郵件（smtp）

下面是按鈕和文本框：

因此，流程是，你必須輸入你的studentID，然後系統會檢查該數據庫是你的ID存在與否。如果你的studentID存在，我們會發送確認信息（隨機密碼訪問網絡）。

但是在這裏，我很難發送電子郵件，說實話，我不知道什麼是錯的。

這裏是我的部分代碼（僅發送郵件代碼）：

public void sendingverification() 
    { 
     //get EMAIL from spesific ID 
     string getEmail = "SELECT Email FROM TableStudent where StudentID = '" + IdTxt.Text + "'"; 
     SqlCommand sqlcomEmail = new SqlCommand(getEmail, con); 

     //get STUDENT FIRST NAME from spesific ID 
     string getName = "SELECT StudentFName FROM TableStudent where StudentID = '" + IdTxt.Text + "'"; 
     SqlCommand sqlcomName = new SqlCommand(getName, con); 

     string randomPw = System.Web.Security.Membership.GeneratePassword(10, 5); 
     string activationUrl = "http://aws.prominensa.com/izari/web-alumni/login.html"; 
     var fromAddress = new MailAddress("[email protected]", "S2 Alumnae Team"); 
     var toAddress = new MailAddress(sqlcomEmail.ToString(), sqlcomName.ToString()); 
     const string fromPassword = "123456"; 
     const string subject = "Activation Link for S2 Alumnae"; 
     string body = "Hello " + sqlcomName.ToString() + ", "; 
     body += "<br /><br />your account is almost done. You can login with your account now with this link below."; 
     body += "<br /><" + activationUrl; 
     body += "<br />< Please note that you will be able to login using: "; 
     body += "<br />< StudentID = " + IdTxt.Text; 
     body += "<br />< Password = " + randomPw; 
     body += "<br />< Thank you."; 

     var smtp = new SmtpClient 
     { 
      Host = "smtp.gmail.com", 
      Port = 587, 
      EnableSsl = true, 
      DeliveryMethod = SmtpDeliveryMethod.Network, 
      Credentials = new NetworkCredential(fromAddress.Address, fromPassword), 
      Timeout = 20000 
     }; 

     using (var message = new MailMessage(fromAddress, toAddress) 
     { 
      Subject = subject, 
      Body = body 
     }) 
     { 
      smtp.Send(message); 
     } 
    }

來源

2016-05-29 user6396287

請問1）編輯你的代碼並寫出正確的C＃代碼？ 2）你的'''message'''對象似乎在你調用* Send *之前就被處理了，3）你得到了什麼錯誤？ – Ruskin

你遇到的異常或錯誤是什麼？ –

是您從您的Gmail發送電子郵件，還有一些小設置，需要做的事情。（我不記得那個確切的設置，如果你不這樣做，你會得到一個錯誤，只是谷歌，你會發現那是什麼）。

我看到你使用String來建立你的消息，不要這樣做，而是使用StringBuilder。

查看此片段。

  MailMessage mailObj = new MailMessage(); 
      //verification mail 
      mailObj.Subject = "Your Email Subject line"; 

      mailObj.Body = ComposeVerficationMailBody(emailDetails.MailMessage, emailDetails.RecipientName); 
      emailDetails.SenderName = "Your Website Name"; 


      mailObj.IsBodyHtml = true; 
      mailObj.Priority = System.Net.Mail.MailPriority.High; 

      //TO 
      mailObj.To.Add(emailDetails.RecipientEmailAddress); 
      mailObj.BodyEncoding = Encoding.Default; 
      mailObj.ReplyToList.Add(emailDetails.ReplyToEmailAddress); 
      //From 
      mailObj.From = new MailAddress(senderEmailAddress, senderDisplayName); 
      using (SmtpClient mailClient = new SmtpClient()) 
      { 
       mailClient.Host = "gmail host"; 
       mailClient.Port = 587; 
       mailClient.EnableSsl = false; 
       mailClient.UseDefaultCredentials = true; 
       mailClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network; 
       //mailClient.Credentials = new NetworkCredential("senderEmail", "senderPassword"); 


       MailAddress msg = new MailAddress(emailDetails.ReplyToEmailAddress); 
       mailClient.Timeout = 500000; 
       mailClient.Send(mailObj); 



private String ComposeVerficationMailBody() 
{ 
    StringBuilder emailMessage = new StringBuilder(); 
    //build your message here 
    return emailMessage.toString(); 
}

希望它足夠您的要求。

來源

2016-05-29 07:54:53

不能發送電子郵件（smtp）

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