C#使用SMTP发送附件

几年前有股学C#的热情,写下了C#发送邮件和C#发送带附件的邮件文章,放到baidu上。之前有有放到ttlsa上,但是搜索发现文章貌似被删除了,今天特意重新补充一下。此文留作记录. 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); } } } } 站点: 运维生存时间    网址:http://www.ttlsa.com/html/3456.html

你可能感兴趣的:(C#,smtp,C#发送附件)