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六月24日

时间:2020-06-24 17:41

如何把C#邮件发送代码改成群发机?长知识了!

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分类:邮件群发工具系统 | 评论:0人 | 浏览:45次   

– -,

我直接上图 上代码吧。

C# 邮件发送,可根据需求修改为群发~

 

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;  
using System.Net.Mail;  
using System.Net.Mime;  
using System.IO;

namespace SendMailExample
{
/// <summary>
/// 作者:Andrew
/// Blog: http://blog.csdn.net/Andrew_wx
/// </summary>
public partial class FormSendMail : Form
{
public FormSendMail()
{
InitializeComponent();
}

private void FormSendMail_Load(object sender, EventArgs e)
{
txtSmtpServer.Text = smtp.qq.com;
txtSend.Text = heuandmei@qq.com;
txtDisplayName.Text = Andrew(王旭);
txtPassword.Text = “”;//密码
txtReceive.Text = heuandmei@qq.com;
txtTitle.Text = 发信测试;
txtBody.Text = This is a test(测试);
rbtnNoSSL.Checked = true;
}

private void btnAddFiles_Click(object sender, EventArgs e)
{
OpenFileDialog odlg = new OpenFileDialog();
odlg.CheckFileExists = true;
//只接收有效的文件名
odlg.ValidateNames = true;
//允许一次选择多个文件作为附件
odlg.Multiselect = true;
if (odlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
lstFiles.Items.AddRange(odlg.FileNames);
}

}

private void btnSend_Click(object sender, EventArgs e)
{
this.Cursor = Cursors.WaitCursor;
MailMessage mail = new MailMessage();
mail.From = new MailAddress(
txtSend.Text, txtDisplayName.Text, Encoding.UTF8);
mail.To.Add(txtReceive.Text);
mail.Subject = txtTitle.Text;
mail.SubjectEncoding = Encoding.Default;
mail.Body = txtBody.Text;
mail.BodyEncoding = Encoding.Default;
mail.IsBodyHtml = false;
mail.Priority = MailPriority.Normal;
//添加附件
Attachment attachment = null;
if (lstFiles.Items.Count > 0)
{
for (int i = 0; i < lstFiles.Items.Count; i++)
{
string pathFileName = lstFiles.Items[i].ToString();
string extName = Path.GetExtension(pathFileName).ToLower();
//判断附件类型
if (extName == .rar || extName == .zip)
{
attachment = new Attachment(pathFileName, MediaTypeNames.Application.Zip);
}
else
{
attachment = new Attachment(pathFileName, MediaTypeNames.Application.Octet);
}
ContentDisposition cd = attachment.ContentDisposition;
cd.CreationDate = File.GetCreationTime(pathFileName);
cd.ModificationDate = File.GetLastWriteTime(pathFileName);
cd.ReadDate = File.GetLastAccessTime(pathFileName);
mail.Attachments.Add(attachment);

}
}
SmtpClient client = new SmtpClient();
client.Host = txtSmtpServer.Text;
client.Port = 25;
//是否使用安全套接字层加密连接
client.EnableSsl = rbtnUseSSL.Checked;
//不使用默认凭证,注意此句必须放在 client.Credentials 的上面
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential(txtSend.Text, txtPassword.Text);
//邮件通过网络直接发送到服务器
client.DeliveryMethod = SmtpDeliveryMethod.Network;
try
{
client.Send(mail);
MessageBox.Show(发送成功);
}
catch (SmtpException ex)
{
MessageBox.Show(发送失败: + ex.Message);
}
catch (Exception ex)
{
MessageBox.Show(发送失败: + ex.Message);
}
finally
{
mail.Dispose();
client = null;
this.Cursor = Cursors.Default;
}
}
}
}

 

以上是完整代码。

项目包下载地址:http://files.cnblogs.com/andrew-blog/SendMailExample.rar

参考:http://www.wxzzz.com/?id=66

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