C# SMTP自动发邮件
源代码:
using System;
using System.Windows.Forms;
using System.Net.Mail;
using System.Text.RegularExpressions;
namespace 邮件
{
public partial class Form1 : Form
{
string fileName;//获取文件名
public Form1()
{
InitializeComponent();
}
private void button发送_Click(object sender, EventArgs e)
{
SmtpClient client = new SmtpClient();//生成SmtpClient实例,用它发送电子邮件
client.Host = "smtp.163.com";//指定SMTP服务器主机
client.Port = 25;//指定要使用的端口
client.Credentials = new System.Net.NetworkCredential("[email protected]", "xxxxxx");//验证用户名和密码
MailMessage message = new MailMessage();
MailAddress from = new MailAddress(txtSender.Text);//获取输入的发件人邮箱地址
if (txtReceiver.Text != "")
{
if (Regex.IsMatch(txtReceiver.Text, "\\[email protected]\\w+(\\.\\w+)+")) //用正则表达式验证邮箱
{
MailAddress to = new MailAddress(txtReceiver.Text);//获取输入的收件人邮箱地址
message.To.Add(to);//设置邮件接收人,MailMessage类的To属性可以Add多个接收人
}
else
{
MessageBox.Show("收件人邮箱地址不正确");
return;
}
}
else
{
MessageBox.Show("收件人不能为空");
return;
}
if (txtCc.Text != "")
{
if (Regex.IsMatch(txtCc.Text, "\\[email protected]\\w+(\\.\\w+)+"))
{
MailAddress cc = new MailAddress(txtCc.Text);//获取输入的抄送人邮箱地址
message.CC.Add(cc);//设置邮件抄送人,MailMessage类的To属性可以Add多个抄送人
}
else
{
MessageBox.Show("抄送人邮箱地址不正确");
return;
}
}
if (txtAttachFileName.Text != "")
{
fileName = txtAttachFileName.Text;//获取文件名
Attachment attach = new Attachment(fileName);//获取选择的附件
message.Attachments.Add(attach);//将附件添加到邮件中,MailMessage类的Attachments属性可以Add多个附件
}
message.Subject = txtTitle.Text;//获取输入的邮件标题
message.Body = rtbContext.Text;//获取输入的邮件正文
message.From = from;//设置邮件发件人
client.Send(message);
MessageBox.Show("发送成功");
}
private void button添加附件_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.Filter = "所有文件(*.*)|*.*";
if (ofd.ShowDialog() == DialogResult.OK)
{
txtAttachFileName.Text = ofd.FileName;
}
}
}
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原文链接:https://blog.csdn.net/qq_30725967/article/details/85271920