【发布时间】:2016-03-15 12:23:07
【问题描述】:
我编写了一个 C# 程序来发送电子邮件,效果很好。 此外,我有一个用于发送电子邮件的 PHP 脚本,效果也很好。
但我的问题是: 是否可以像使用 PHP 一样使用 C# 发送电子邮件,而无需指定凭据、服务器、端口等。
我想使用 C# 而不是 PHP,因为我正在创建一个 ASP.Net Web 应用程序。
这是我当前的 C# 代码:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net.Mail;
using System.Net;
namespace $rootnamespace$
{
public partial class $safeitemname$ : Form
{
public $safeitemname$()
{
InitializeComponent();
}
private void AttachB_Click(object sender, EventArgs e)
{
if (AttachDia.ShowDialog() == DialogResult.OK)
{
string AttachF1 = AttachDia.FileName.ToString();
AttachTB.Text = AttachF1;
AttachPB.Visible = true;
AttachIIB.Visible = true;
AttachB.Visible = false;
}
}
private void AttachIIB_Click(object sender, EventArgs e)
{
if (AttachDia.ShowDialog() == DialogResult.OK)
{
string AttachF1 = AttachDia.FileName.ToString();
AttachIITB.Text = AttachF1;
AttachPB.Visible = true;
}
}
private void SendB_Click(object sender, EventArgs e)
{
try
{
SmtpClient client = new SmtpClient(EmailSmtpAdresTB.Text);
client.EnableSsl = true;
client.Timeout = 20000;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential(EmailUserNameTB.Text, EmailUserPasswordTB.Text);
MailMessage Msg = new MailMessage();
Msg.To.Add(SendToTB.Text);
Msg.From = new MailAddress(SendFromTB.Text);
Msg.Subject = SubjectTB.Text;
Msg.Body = EmailTB.Text;
/// Add Attachments to mail or Not
if (AttachTB.Text == "")
{
if (EmailSmtpPortTB.Text != null)
client.Port = System.Convert.ToInt32(EmailSmtpPortTB.Text);
client.Send(Msg);
MessageBox.Show("Successfuly Send Message !");
}
else
{
Msg.Attachments.Add(new Attachment(AttachTB.Text));
Msg.Attachments.Add(new Attachment(AttachIITB.Text));
if (EmailSmtpPortTB.Text != null)
client.Port = System.Convert.ToInt32(EmailSmtpPortTB.Text);
client.Send(Msg);
MessageBox.Show("Successfuly Send Message !");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void settingsBindingNavigatorSaveItem_Click(object sender, EventArgs e)
{
this.Validate();
this.settingsBindingSource.EndEdit();
this.tableAdapterManager.UpdateAll(this.awDushiHomesDBDataSet);
}
private void awDushiHomesEmail_Load(object sender, EventArgs e)
{
// TODO: This line of code loads data into the 'awDushiHomesDBDataSet.Settings' table. You can move, or remove it, as needed.
this.settingsTableAdapter.Fill(this.awDushiHomesDBDataSet.Settings);
}
}
}
这就是它在 PHP 中的实现方式:
<?php
//define the receiver of the email
$to = 'test@hotmail.com';
//define the subject of the email
$subject = 'Test email with attachment';
//create a boundary string. It must be unique
//so we use the MD5 algorithm to generate a random hash
$random_hash = md5(date('r', time()));
//define the headers we want passed. Note that they are separated with \r\n
$headers = "From: webmaster@example.com\r\nReply-To: webmaster@example.com";
//add boundary string and mime type specification
$headers .= "\r\nContent-Type: multipart/mixed; boundary=\"PHP-mixed-".$random_hash."\"";
//read the atachment file contents into a string,
//encode it with MIME base64,
//and split it into smaller chunks
$attachment = chunk_split(base64_encode(file_get_contents('PDFs\Doc1.pdf')));
//define the body of the message.
ob_start(); //Turn on output buffering
?>
--PHP-mixed-<?php echo $random_hash; ?>
Content-Type: multipart/alternative; boundary="PHP-alt-<?php echo $random_hash; ?>"
--PHP-alt-<?php echo $random_hash; ?>
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Hello World!!!
This is simple text email message.
--PHP-alt-<?php echo $random_hash; ?>
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
<h2>Hello World!</h2>
<p>This is something with <b>HTML</b> formatting.</p>
--PHP-alt-<?php echo $random_hash; ?>--
--PHP-mixed-<?php echo $random_hash; ?>
Content-Type: application/zip; name="Doc1.pdf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment
<?php echo $attachment; ?>
--PHP-mixed-<?php echo $random_hash; ?>--
<?php
//copy current buffer contents into $message variable and delete current output buffer
$message = ob_get_clean();
//send the email
$mail_sent = @mail( $to, $subject, $message, $headers );
//if the message is sent successfully print "Mail sent". Otherwise print "Mail failed"
echo $mail_sent ? "Mail sent" : "Mail failed";
?>
我不是要你写我的代码,但也许你可以提供一些信息或者让我知道它是否可能。
编辑:
我的问题不是不使用 smtp 服务器,而是如何在不输入用户名和密码的情况下发送电子邮件。我知道,只有当发送电子邮件的请求来自我的服务器时,它才会起作用。
【问题讨论】:
-
实际上 PHP 确实 使用various mail server settings,但是它们存储在 php.ini 文件中并具有内置的默认值。如果您确实需要进行非系统范围的更改,我假设您可以在运行时使用
ini_set()更改它们。 -
@Mike 我真的不知道要找什么,但我用谷歌搜索了很多,也许是错误的东西......我会试试你给我的链接。 client.UseDefaultCredentials = true;看起来很有希望。
-
实际上我删除了我的最后一条评论,因为我认为这并没有像我想象的那样。当您需要对邮件服务器进行身份验证时,似乎会使用它。如果我错了纠正我。我根本不懂 C#。
-
您提供了一些代码并陈述了一个目标,但您没有说明您的代码的行为方式与您的预期不符。它会抛出错误吗?什么错误?
-
PHP 并不神奇。你也必须告诉它邮件服务器在哪里。