應用C#發送帶附件的電子郵件的辦法的代碼示例剖析

應用C#發送帶附件的電子郵件的辦法的代碼示例剖析。本站提示廣大學習愛好者：（應用C#發送帶附件的電子郵件的辦法的代碼示例剖析）文章只能為提供參考，不一定能成為您想要的結果。以下是應用C#發送帶附件的電子郵件的辦法的代碼示例剖析正文

以下代碼除完成發送簡略的郵件之外，還包含了發送附件。From圖沒有貼出，下面就兩按鈕，一個“添加附件”、一個“發送”。點擊添加附件選擇文件， 文件途徑全存儲在listbox1中。在發送按鈕辦法中，把listbox1一切的文件添加到mailmessage對象裡作為郵件發送出去了，請看代碼

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
{
//界說一個mail對象
MailMessage mailmessage = new MailMessage(““, ““, “this is a test”, “yes!test!”);
//from email，to email，主題，郵件內容
mailmessage.Priority = MailPriority.Normal; //郵件優先級
SmtpClient smtpClient = new SmtpClient(“smtp.163.com”, 25); //smtp地址和端標語
smtpClient.Credentials = new NetworkCredential(“ttlsa.com”, “xxxxxx”);//smtp用戶名暗碼
smtpClient.EnableSsl = true; //啟用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(); //獲得擴大名
if(extName==”.rar”||extName==”.zip”) //.rar和.zip的文件屬於緊縮文件類型
{
attachment = new Attachment(pathFileName,MediaTypeNames.Application.Zip);
}else
{
attachment = new Attachment(pathFileName,MediaTypeNames.Application.Octet);
}
//設置附件的MIME信息
ContentDisposition cd = attachment.ContentDisposition;
cd.CreationDate = File.GetCreationTime(pathFileName);//設置附件的創立時光
cd.ModificationDate = File.GetLastWriteTime(pathFileName);//設置附件的修正時光
cd.ReadDate = File.GetLastAccessTime(pathFileName);//設置附件的拜訪時光
mailmessage.Attachments.Add(attachment);//將附件添加到mailmessage對象
}
}
smtpClient.Send(mailmessage);
MessageBox.Show(“發送勝利”);
}
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();//界說一個選擇文件的對話框
opd.Multiselect = true;//許可選擇多個文件
opd.CheckFileExists = true;//檢討文件能否存在
opd.ValidateNames = true;//檢討文件名的可用性
opd.ShowDialog();//翻開對話框
if(opd.FileNames.Length>0)//將選擇的文件途徑寫入listbox中
{
listBox1.Items.AddRange(opd.FileNames);
}
}
}
}

PS：應用網易163smtp郵箱發送郵件

protected void Button2_Click(object sender, EventArgs e)
  {
    System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
    client.Host = "smtp.163.com";//應用163的SMTP辦事器發送郵件
    client.UseDefaultCredentials = true; 
    client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network; 
    client.Credentials = new System.Net.NetworkCredential("用戶名", "暗碼");//163的SMTP辦事器須要用163郵箱的用戶名和暗碼作認證，假如沒有須要去163請求個,                                     
    //這裡假定你曾經具有了一個163郵箱的賬戶，用戶名為abc，暗碼為******* 
    System.Net.Mail.MailMessage Message = new System.Net.Mail.MailMessage();
    Message.From = new System.Net.Mail.MailAddress("上述用戶名暗碼所對應的郵箱地址");//這裡須要留意，163仿佛有劃定發信人的郵箱地址必需是163的，並且發信人的郵箱用戶名必需和下面SMTP辦事器認證時的用戶名雷同                                
    //由於下面用的用戶名abc作SMTP辦事器認證，所以這裡發信人的郵箱地址也應當寫為[email protected]
    Message.To.Add("目的郵箱地址");//將郵件發送給Gmail
    //Message.To.Add("[email protected]");//將郵件發送給QQ郵箱
    Message.Subject = "customer feedback";
    Message.Body = "customer feedback content"; 
    Message.SubjectEncoding = System.Text.Encoding.UTF8;
    Message.BodyEncoding = System.Text.Encoding.UTF8;
    Message.Priority = System.Net.Mail.MailPriority.High;
    Message.IsBodyHtml = true;
    client.Send(Message);
  }