C#编程实现发送邮件的方法(可添加附件)

这篇文章主要介绍了C#编程实现发送邮件的方法,具备添加附件的功能,涉及C#文件传输及邮件发送的相关技巧,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了C#编程实现发送邮件的方法。分享给大家供大家参考，具体如下：

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									using System.Collections.Generic;

									using System.ComponentModel;

									using System.Data;

									using System.Drawing;

									using System.Linq;

									using System.Text;

									using System.Windows.Forms;

									using System.Net.Mail;

									namespace WindowsFormsApplication63

									{

									 public partial class Form1 : Form

									 {

									  public Form1()

									  {

									   InitializeComponent();

									  }

									  //打开上传附件的对话框

									  private void btnUP_Click(object sender, EventArgs e)

									  {

									   oFDialogSFile.InitialDirectory = "C:\\";//设置对话框的初始目录为C盘

									    oFDialogSFile.Filter = "all files (*.*)|*.*";//筛选字符串为所有文件

									    oFDialogSFile.RestoreDirectory = true;

									   oFDialogSFile.ShowDialog();

									   cboxAccessories.Items.Add(oFDialogSFile.FileName.Trim());//当选择好文件后将文件名赋值给下拉框

									  }

									  //发送邮件

									  private void btnSend_Click(object sender, EventArgs e)

									  {

									    try

									    {

									     string file = Application.StartupPath + "testXML.xml";

									     //SmtpClient下的一个对象，用以设置邮件的主题和内容

									      System.Net.Mail.MailMessage myMail = new System.Net.Mail.MailMessage();

									     //发送端到接收端的邮箱地址

									      myMail = new System.Net.Mail.MailMessage(txtSEmail.Text.Trim(), txtCEmail.Text.Trim());

									     myMail.Subject = txtETitle.Text.Trim();

									     myMail.Body = txtEContent.Text.Trim();

									     if (cboxAccessories.Items.Count > 0)

									     {

									      for (int i = 0; i < cboxAccessories.Items.Count; i++)

									      { //建立邮件附件类的一个对象，语法格式为System.Net.Mail.Attachment(文件名，文件格式)

									       System.Net.Mail.Attachment myAttachment = new System.Net.Mail.Attachment(

									       cboxAccessories.Items[i].ToString(), System.Net.Mime.MediaTypeNames.Application.Octet);

									       //MIME协议下的一个对象，用以设置附件的创建时间，修改时间以及读取时间

									       System.Net.Mime.ContentDisposition disposition = myAttachment.ContentDisposition;

									       disposition.CreationDate = System.IO.File.GetCreationTime(file);

									       disposition.ModificationDate = System.IO.File.GetLastWriteTime(file);

									       disposition.ReadDate = System.IO.File.GetLastAccessTime(file);

									       //用smtpclient对象里attachments属性，添加上面设置好的myattachment

									       myMail.Attachments.Add(myAttachment);

									      }

									     }

									     //建立发送对象client,验证邮件服务器，服务器端口，用户名，以及密码

									     System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient(txtSService.Text.Trim(), Convert.ToInt32(txtServicePort.Text.Trim()));

									     client.Credentials = new System.Net.NetworkCredential(txtUPwd.Text.Trim(), txtCEmail.Text.Trim());

									     client.Send(myMail);

									     MessageBox.Show("邮件发送成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

									    }

									    catch (Exception ex)

									    {

									     MessageBox.Show(ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

									    }

									   }

									  private void 删除上传文件_Click(object sender, EventArgs e)

									  {

									   if (cboxAccessories.Text == "")

									   {

									    MessageBox.Show("没有附件可删！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

									   }

									   else

									   {

									    cboxAccessories.Items.Remove(cboxAccessories.Text.Trim());

									   }

									  }

									  }

									}