以下代码除了实现发送简单的邮件以外，还包括了发送附件。From图没有贴出，上面就两按钮，一个“添加附件”、一个“发送”。点击添加附件选择文件， 文件路径全存储在listbox1中。在发送按钮方法中，把listbox1所有的文件添加到mailmessage对象里作为邮件发送出去了，请看代码
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Drawing;
- using System.Text;
- using System.Windows.Forms;
- using System.Net.Mail;
- using System.Net;
- using System.Net.Security;
- using System.IO;
- using System.Net.Mime;
- namespace SmtpTest
- {
- public partial class Form1 : Form
- {
- public Form1()
- {
- InitializeComponent();
- }
- private void button1_Click(object sender, EventArgs e)
- {
- try
- {
- //定义一个mail对象
- MailMessage mailmessage = new MailMessage(““, ““, “this is a test”, “yes!test!”);
- //from email，to email，主题，邮件内容
- mailmessage.Priority = MailPriority.Normal; //邮件优先级
- SmtpClient smtpClient = new SmtpClient(“smtp.163.com”, 25); //smtp地址以及端口号
- smtpClient.Credentials = new NetworkCredential(“ttlsa.com”, “xxxxxx”);//smtp用户名密码
- smtpClient.EnableSsl = true; //启用ssl
- //添加附件
- Attachment attachment =null;
- if(listBox1.Items.Count>0)
- {
- for (int i = 0; i < listBox1.Items.Count; i++)
- {
- string pathFileName = listBox1.Items[i].ToString();
- string extName = Path.GetExtension(pathFileName).ToLower(); //获取扩展名
- if(extName==”.rar”||extName==”.zip”) //.rar和.zip的文件属于压缩文件类型
- {
- attachment = new Attachment(pathFileName,MediaTypeNames.Application.Zip);
- }else
- {
- attachment = new Attachment(pathFileName,MediaTypeNames.Application.Octet);
- }
- //设置附件的MIME信息
- ContentDisposition cd = attachment.ContentDisposition;
- cd.CreationDate = File.GetCreationTime(pathFileName);//设置附件的创建时间
- cd.ModificationDate = File.GetLastWriteTime(pathFileName);//设置附件的修改时间
- cd.ReadDate = File.GetLastAccessTime(pathFileName);//设置附件的访问时间
- mailmessage.Attachments.Add(attachment);//将附件添加到mailmessage对象
- }
- }
- smtpClient.Send(mailmessage);
- MessageBox.Show(“发送成功”);
- }
- catch (SmtpException se)
- {
- MessageBox.Show(se.StatusCode.ToString());
- }
- }
- //添加附件,把文件添加到listbox中
- private void button2_Click(object sender, EventArgs e)
- {
- OpenFileDialog opd = new OpenFileDialog();//定义一个选择文件的对话框
- opd.Multiselect = true;//允许选择多个文件
- opd.CheckFileExists = true;//检查文件是否存在
- opd.ValidateNames = true;//检查文件名的可用性
- opd.ShowDialog();//打开对话框
- if(opd.FileNames.Length>0)//将选择的文件路径写入listbox中
- {
- listBox1.Items.AddRange(opd.FileNames);
- }}}}
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