邮件发送
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.Mime;using System.Net;using System.IO;namespace SendEmail{ public partial class Form1 : Form { public Form1() { InitializeComponent(); this.ImeMode = ImeMode.Hangul; } //窗体的Load事件 private void Form1_Load(object sender, EventArgs e) { //添加俩个smpt服务器的名称 cmbBoxSMTP.Items.Add("smtp.163.com"); cmbBoxSMTP.Items.Add("smtp.gmail.com"); //设置为下拉列表 cmbBoxSMTP.DropDownStyle = ComboBoxStyle.DropDownList; //默认选中第一个选项 cmbBoxSMTP.SelectedIndex = 0; //在下面添加你想要初始化的内容，比如显示姓名、用户名等 } //添加按钮的单击事件 private void btnAdd_Click(object sender, EventArgs e) { //定义并初始化一个OpenFileDialog类的对象 OpenFileDialog openFile = new OpenFileDialog(); openFile.InitialDirectory = Application.StartupPath; openFile.FileName = ""; openFile.RestoreDirectory = true; openFile.Multiselect = false; //显示打开文件对话框，并判断是否单击了确定按钮 if (openFile.ShowDialog() == DialogResult.OK) { //得到选择的文件名 string fileName = openFile.FileName; //将文件名添加到TreeView中 treeViewFileList.Nodes.Add(fileName); } } //删除按钮的单击事件 private void btnDelete_Click(object sender, EventArgs e) { //判断是否选中了节点 if (treeViewFileList.SelectedNode != null) { //得到选择的节点 TreeNode tempNode = treeViewFileList.SelectedNode; //删除选中的节点 treeViewFileList.Nodes.Remove(tempNode); } else { MessageBox.Show("请选择要删除的附件。"); } } //发送按钮的单击事件 private void btnSend_Click(object sender, EventArgs e) { try { //确定smtp服务器地址。实例化一个Smtp客户端 System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient(cmbBoxSMTP.Text); //生成一个发送地址 string strFrom = string.Empty; if (cmbBoxSMTP.SelectedItem.ToString() == "smtp.163.com") strFrom = txtUserName.Text "@163.com"; else strFrom = txtUserName.Text "@gmail.com"; //构造一个发件人地址对象 MailAddress from = new MailAddress(strFrom, txtDisplayName.Text, Encoding.UTF8); //构造一个收件人地址对象 MailAddress to = new MailAddress(txtEmail.Text, txtToName.Text, Encoding.UTF8); //构造一个Email的Message对象 MailMessage message = new MailMessage(from, to); //为 message 添加附件 foreach (TreeNode treeNode in treeViewFileList.Nodes) { //得到文件名 string fileName = treeNode.Text; //判断文件是否存在 if (File.Exists(fileName)) { //构造一个附件对象 Attachment attach = new Attachment(fileName); //得到文件的信息 ContentDisposition disposition = attach.ContentDisposition; disposition.CreationDate = System.IO.File.GetCreationTime(fileName); disposition.ModificationDate = System.IO.File.GetLastWriteTime(fileName); disposition.ReadDate = System.IO.File.GetLastAccessTime(fileName); //向邮件添加附件 message.Attachments.Add(attach); } else { MessageBox.Show("文件" fileName "未找到！"); } } //添加邮件主题和内容 message.Subject = txtSubject.Text; message.SubjectEncoding = Encoding.UTF8; message.Body = rtxtBody.Text; message.BodyEncoding = Encoding.UTF8; //设置邮件的信息 client.DeliveryMethod = SmtpDeliveryMethod.Network; message.BodyEncoding = System.Text.Encoding.UTF8; message.IsBodyHtml = false; //如果服务器支持安全连接，则将安全连接设为true。 //gmail支持，163不支持，如果是gmail则一定要将其设为true if (cmbBoxSMTP.SelectedText == "smpt.163.com") client.EnableSsl = false; else client.EnableSsl = true; //设置用户名和密码。 //string userState = message.Subject; client.UseDefaultCredentials = false; string username = txtUserName.Text; string passwd = txtPassword.Text; //用户登陆信息 NetworkCredential myCredentials = new NetworkCredential(username, passwd); client.Credentials = myCredentials; //发送邮件 client.Send(message); //提示发送成功 MessageBox.Show("发送成功!"); } catch (Exception ex) { MessageBox.Show(ex.Message); } } private void groupBox3_Enter(object sender, EventArgs e) { } }}
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