C# 在文本框中一次取一段文本

Question

我有一个文本框（ textBox2 ）电子邮件在哪里： thisemail@gmail.com,hello@yahoo.it,YesOrNo@gmail.com,etc..

我有一个发送电子邮件的功能：

private void button1_Click(object sender, EventArgs e)
{
    var mail = new MailMessage();
    var smtpServer = new SmtpClient(textBox5.Text);
    mail.From = new MailAddress(textBox1.Text);
    mail.To.Add(textBox2.Text);
    mail.Subject = textBox6.Text;
    mail.Body = textBox7.Text;
    mail.IsBodyHtml = checkBox1.Checked;
    mail.Attachments.Add(new Attachment(textBox9.Text));
    var x = int.Parse(textBox8.Text);
    smtpServer.Port = x;
    smtpServer.Credentials = new System.Net.NetworkCredential(textBox3.Text, textBox4.Text);
    smtpServer.EnableSsl = checkBox2.Checked;
    smtpServer.Send(mail);
}

我希望您分别向每封电子邮件发送一封电子邮件。 也就是说，当我按下按钮button1给他发送一封电子邮件并发送电子邮件时，直到您结束为止。 我能怎么做？

Answer 1

如果您只是不想让所有收件人看到其他地址，您可以只使用密件抄送

mail.Bcc.Add(textBox2.Text);

如果您确实想多次发送同一封电子邮件，您可以在逗号上拆分地址，然后将它们传递给您在单独方法中已有的代码。

private void button1_Click(object sender, EventArgs e)
{
    foreach(var address in textBox2.Text.Split(","))
        SendMessage(address);
}

private void SendMessage(string address)
{
    var mail = new MailMessage();
    var smtpServer = new SmtpClient(textBox5.Text);
    mail.From = new MailAddress(textBox1.Text);
    mail.To.Add(address);
    mail.Subject = textBox6.Text;
    mail.Body = textBox7.Text;
    mail.IsBodyHtml = checkBox1.Checked;
    mail.Attachments.Add(new Attachment(textBox9.Text));
    var x = int.Parse(textBox8.Text);
    smtpServer.Port = x;
    smtpServer.Credentials = new System.Net.NetworkCredential(textBox3.Text, textBox4.Text);
    smtpServer.EnableSsl = checkBox2.Checked;
    smtpServer.Send(mail);
}

Answer 2

试试这个代码：

string emailList = "thisemail@gmail.com,hello@yahoo.it,YesOrNo@gmail.com";
string[] emails = emailList.Split(","); // replace this text with your source :)

foreach(string s in emails)
{
var mail = new MailMessage();
            var smtpServer = new SmtpClient(textBox5.Text);
            mail.From = new MailAddress(textBox1.Text);
            mail.To.Add(s);
            mail.Subject = textBox6.Text;
            mail.Body = textBox7.Text;
            mail.IsBodyHtml = checkBox1.Checked;
            mail.Attachments.Add(new Attachment(textBox9.Text));
            var x = int.Parse(textBox8.Text);
            smtpServer.Port = x;
            smtpServer.Credentials = new System.Net.NetworkCredential(textBox3.Text, textBox4.Text);
            smtpServer.EnableSsl = checkBox2.Checked;
            smtpServer.Send(mail);
}