如何使用多行TextBox文本发送邮件？ [英] How to send mail with the multiline TextBox text ?

问题描述

我正在尝试下面的代码，但它一次发送一封邮件。但我想拆分文本框，只需点击一下即可发送多封电子邮件......

  private   void  btnsendnow_Click（ object  sender，EventArgs e）
 {
  //   email_send  
 尝试 
 {
 SmtpClient client =  new  SmtpClient（  smtp.gmail.com， 587 ）; 
 client.EnableSsl =  true ; 
 client.Timeout =  100000 ; 
 client.DeliveryMethod = SmtpDeliveryMethod.Network; 
 client.UseDefaultCredentials =  false ; 
 client.Credentials =  new  NetworkCredential（  EMAIL-ID，  PASSWORD）; 
 MailMessage msg =  new  MailMessage（）; 
 msg.To.Add（txtto.Text）; 
 msg.From =  new  MailAddress（  [e-mail]）; 
 msg.Subject = txtsubject.Text; 
 msg.Body = txtmessage.Text; 
附件数据= 新附件（txtattachment.Text）; 
 msg.Attachments.Add（data）; 
 client.Send（msg）; 
 
  //   List< string> mail = txtto.Text.Trim（）。分割（'，'）。ToList（）;  
  //   client.Send（msg，mail）;  
 MessageBox.Show（ 成功发送.....）; 
} 
  catch （Exception ex）
 {
 MessageBox.Show（ex.Message）; 
} 
} 

解决方案

好吧，假设分隔线的东西是CRLF（\\\\ \\ n），试试这个：



替换：

 msg.To.Add（txtto.Text）; 

使用：

 foreach（txtto.Text.Split中的字符串地址（new [] {Environment.NewLine} ，StringSplitOptions.RemoveEmptyEntries））
 {
 msg.To.Add（address）; 
} 

你需要使用拆分拆分文本框文本，然后每行都有一个循环 - 即每个地址。​​



以下假设您在每个地址之间放置了一个回车换行符（即按下它们之间的Enter按钮）

 < span class =code-keyword> var  x = txtto.Text.Split（Environment.NewLine [ 0 ]）; 
  foreach （ var  s  in  x）
 Console.WriteLine（  | {0} |，s.Trim （））; 

注意在 NewLine结尾处使用 [0] - 这是因为我需要拆分 char 而不是字符串。这也解释了当我显示结果时使用的 .Trim（） ... NewLine是CarriageReturn + LineFeed。



另请注意使用 Environment.NewLine 而不是硬编码CRLF的ascii值



编辑 - 一个稍微整洁的解决方案

  var  x = textBox1.Text.Split（ new  [] {Environment.NewLine}，StringSplitOptions.RemoveEmptyEntries）; 
  foreach （ var  s  in  x）
 Console.WriteLine（  | {0} |，s）; 

I am trying with below code but it sends a single mail at a time.But i want to split the textbox for sending multiple emails at a single click......

private void btnsendnow_Click(object sender, EventArgs e)
{
    //email_send
    try
    {
        SmtpClient client = new SmtpClient("smtp.gmail.com", 587);
        client.EnableSsl = true;
        client.Timeout = 100000;
        client.DeliveryMethod = SmtpDeliveryMethod.Network;
        client.UseDefaultCredentials = false;
        client.Credentials = new NetworkCredential("EMAIL-ID", "PASSWORD");
        MailMessage msg = new MailMessage();
        msg.To.Add(txtto.Text);
        msg.From = new MailAddress("[e-mail]");
        msg.Subject = txtsubject.Text;
        msg.Body = txtmessage.Text;
        Attachment data = new Attachment(txtattachment.Text);
        msg.Attachments.Add(data);
        client.Send(msg);
                
        // List<string> mail = txtto.Text.Trim().Split(',').ToList();
        //client.Send(msg,mail);
        MessageBox.Show("successfully send.....");
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

解决方案

Well, presuming the thing separating the lines is a CRLF (\r\n), try this:

Replace:

msg.To.Add(txtto.Text);

With:

foreach (string address in txtto.Text.Split(new[] {Environment.NewLine}, StringSplitOptions.RemoveEmptyEntries))
{
   msg.To.Add(address); 
}

[EDIT - Fixed incorrect split]

You need to use Split to split the text box text and then have a loop though each line - i.e. each address.

The following assumes that you have put a carriage-return-linefeed between each address (i.e. have hit the Enter button between them)

var x = txtto.Text.Split(Environment.NewLine[0]);
foreach (var s in x)
    Console.WriteLine("|{0}|", s.Trim());

Note the use of [0] at the end of NewLine - this is because I need to split on a char not a string. This also explains the .Trim() used when I'm displaying the results ... NewLine is CarriageReturn + LineFeed.

Also note the use of Environment.NewLine instead of hard-coding ascii values for CRLF

Edit - a slightly neater solution

var x = textBox1.Text.Split(new [] {Environment.NewLine}, StringSplitOptions.RemoveEmptyEntries);
foreach (var s in x)
    Console.WriteLine("|{0}|", s);

这篇关于如何使用多行TextBox文本发送邮件？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！