C# 如何新建和发送带附件的邮件

本篇文章将介绍如何在C#应用程序中新建和发送带附件的邮件。这里所使用的Email组件是Spire.Email，它可以用在C#，VB.NET以及ASP.NET应用程序中，并且不要求在系统上安装Outlook或其他邮件控件。

步骤如下：

1.添加引用

下载Spire.Email组件并添加Spire.Email.dll作为引用。

2.添加代码

I. 设置发送、接收和CC的邮件地址。

MailAddress addressFrom= "sender@outlook.com";
MailAddress addressTo = "receiver@outlook.com";
MailAddress adressCC = "cc@outlook.com";

II.创建电子邮件。 

MailMessage message = new MailMessage(addressFrom,addressTo);

III. 设置邮件的主题，内容以及创建时间。

message.Subject = "测试邮件";
message.BodyText = "您好！\r\n"+
"详情请见附件";
message.Date = DateTime.Now;         

IV.添加附件以及CC邮件地址。

message.Attachments.Add(newAttachment("Hydrangeas.jpg"));
message.Cc.Add(adressCC.Address);

V.创建SmtpClient实例并发送邮件。          

SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.outlook.com";
smtp.ConnectionProtocols = ConnectionProtocols.Ssl;
smtp.Username = addressFrom.Address;
smtp.Password = "password";
smtp.Port = 587;
smtp.SendOne(message);

运行截图：






完整代码：

using System;
using System.Globalization;
using Spire.Email;
using Spire.Email.IMap;
using Spire.Email.Smtp;

namespace Send_Email
{
class Program
{
static void Main(string[] args)
{
MailAddress addressFrom = "sender@outlook.com";
MailAddress addressTo = "receiver@outlook.com";
MailAddress adressCC = "cc@outlook.com";

MailMessage message = newMailMessage(addressFrom, addressTo);

message.Subject = "测试邮件";
message.BodyText = "您好！\r\n"+
"详情请见附件";
message.Date = DateTime.Now;

message.Attachments.Add(new Attachment("Hydrangeas.jpg"));
message.Cc.Add(adressCC.Address);

SmtpClient smtp = newSmtpClient();
smtp.Host = "smtp.outlook.com";
smtp.ConnectionProtocols = ConnectionProtocols.Ssl;
smtp.Username = addressFrom.Address;
smtp.Password = "password";
smtp.Port = 587;

Console.WriteLine("发送   : " +message.From.ToString());
Console.WriteLine("接收   : " +message.To.ToString());
Console.WriteLine("抄送   : " + message.Cc.ToString());
Console.WriteLine("日期   : " +message.Date.ToString(CultureInfo.InvariantCulture));
Console.WriteLine("主题  :" +message.Subject);
Console.WriteLine("附件  :" +message.Attachments.Count);
Console.WriteLine("-------------------BODY -----------------");
Console.WriteLine(message.BodyText);
Console.WriteLine("-------------------END ------------------");
smtp.SendOne(message);

Console.WriteLine("邮件发送成功");
Console.ReadLine();
}
}
}