複数のアドレスにYahoo!メールを送信

Question

私はこのコードを使用してyahooからメールを送信しています。

string smtpAddress = "smtp.mail.yahoo.com"; 
     int portNumber = 587; 
     bool enableSSL = true; 

     string emailFrom = "mitshel@yahoo.com"; 
     string password = "xxxxxx!"; 
     string emailTo = "dimitris.chris@yahoo.com"; 
     string subject = "Hello"; 
     string body = "Hello, I'm just writing this to say Hi!"; 

     using (MailMessage mail = new MailMessage()) 
     { 
      mail.From = new MailAddress(emailFrom); 
      mail.To.Add(emailTo); 
      mail.Subject = subject; 
      mail.Body = body; 
      mail.IsBodyHtml = true; 
      // Can set to false, if you are sending pure text. 


      using (SmtpClient smtp = new SmtpClient(smtpAddress, portNumber)) 
      { 
       smtp.Credentials = new NetworkCredential(emailFrom, password); 
       smtp.EnableSsl = enableSSL; 
       smtp.Send(mail); 

メールアドレスを追加したい場合はどうすればよいですか？私はこれを試してみましたが、私はエラーを取得：

string emailTo = "mitsoshellas@yahoo.com" ,"dimitris.christoforidis@hotmail.com" ; 

Answer 1

string smtpAddress = "smtp.mail.yahoo.com"; 
    int portNumber = 587; 
    bool enableSSL = true; 

    string emailFrom = "mitshel@yahoo.com"; 
    string password = "xxxxxx!"; 
    List<string> emailToList = new List<string>; 
    emailToList.Add("dimitris.chris@yahoo.com"); 
    //add as many other as you like 
    string subject = "Hello"; 
    string body = "Hello, I'm just writing this to say Hi!"; 

    using (MailMessage mail = new MailMessage()) 
    { 
     mail.From = new MailAddress(emailFrom); 
     foreach(string recipient in emailToList){ 
      mail.To.Add(recipient); 
     } 
     mail.Subject = subject; 
     mail.Body = body; 
     mail.IsBodyHtml = true; 
     // Can set to false, if you are sending pure text. 


     using (SmtpClient smtp = new SmtpClient(smtpAddress, portNumber)) 
     { 
      smtp.Credentials = new NetworkCredential(emailFrom, password); 
      smtp.EnableSsl = enableSSL; 
      smtp.Send(mail); 
     } 

または

string smtpAddress = "smtp.mail.yahoo.com"; 
    int portNumber = 587; 
    bool enableSSL = true; 

    string emailFrom = "mitshel@yahoo.com"; 
    string password = "xxxxxx!"; 
    List<string> emailToList = new List<string>; 
    emailToList.Add("dimitris.chris@yahoo.com"); 
    //add as many other as you like 
    string subject = "Hello"; 
    string body = "Hello, I'm just writing this to say Hi!"; 
    foreach(string recipient in emailToList){ 
    using (MailMessage mail = new MailMessage()) 
    { 
     mail.From = new MailAddress(emailFrom); 
     mail.To.Add(recipient); 

     mail.Subject = subject; 
     mail.Body = body; 
     mail.IsBodyHtml = true; 
     // Can set to false, if you are sending pure text. 


     using (SmtpClient smtp = new SmtpClient(smtpAddress, portNumber)) 
     { 
      smtp.Credentials = new NetworkCredential(emailFrom, password); 
      smtp.EnableSsl = enableSSL; 
      smtp.Send(mail); 
     } 
} 

Answer 2

私はあなたがして、コンマとスペースで区切られた複数の電子メールアドレスを持つ1つの文字列を、持っていると仮定しています、例えば

string emailTo = "someEmail@email.com, someEmail2@email.com, someEmail3@email.com"; 

emailToを文字列の集合に分割する必要があります。これを実現するには、次のように使用することができます。

// Separate the emailTo string into a list of email addresses 
List<string> emailAddresses = new List<string>(); 

    int startingIndex = 0; 
    while (startingIndex < emailTo.Length) 
    { 
     int commaIndex = emailTo.IndexOf(",", i); 
     if (commaIndex != -1) 
     { 
      //Extract the email address 
      string emailAddress = emailTo.Substring(startingIndex, commaIndex - startingIndex); 

      // Remove the space following the comma 
      if (emailAddress.Substring(0, 1) == " ") 
      { 
       emailAddress = emailAddress.Substring(1, emailAddress.Length - 1); 
      } 
      i = startingIndex + 1; 
      result.Add(emaiAddress); 
     } 
    } 

// Add each email address to the message's recipients 
foreach(string emailAddress in emailAddresses) 
{ 
    mail.To.Add(emailAddress); 
} 

この方法の利点は、あなたが手動メールアドレスを解析し、あなたが持っているイベントの中で自分自身をリストの受信者にそれらを追加する必要はありませんということですemailTo文字列には多くの電子メールアドレスが含まれています。