.NET怎么发送一封带附件的电子邮件_带附件邮件发送教程

using System;
using System.Net;
using System.Net.Mail;

var fromAddress = new MailAddress("your_email@qq.com", "发件人姓名");
var toAddress = new MailAddress("recipient@example.com", "收件人");

var message = new MailMessage(fromAddress, toAddress)
{
    Subject = "这是一封带附件的测试邮件",
    Body = "请查收附件内容。",
    IsBodyHtml = false
};

// 添加附件（例如一个PDF文件）
string attachmentPath = @"C:\files\test.pdf";
if (System.IO.File.Exists(attachmentPath))
{
    var attachment = new Attachment(attachmentPath);
    message.Attachments.Add(attachment);
}

// 配置SMTP客户端
var smtp = new SmtpClient
{
    Host = "smtp.qq.com",
    Port = 587,
    EnableSsl = true,
    DeliveryMethod = SmtpDeliveryMethod.Network,
    UseDefaultCredentials = false,
    Credentials = new NetworkCredential(fromAddress.Address, "your_auth_code")
};

// 发送邮件
try
{
    smtp.Send(message);
    Console.WriteLine("邮件发送成功！");
}
catch (Exception ex)
{
    Console.WriteLine("发送失败：" + ex.Message);
}
finally
{
    message.Dispose();
    smtp.Dispose();
}