制作客户端邮件发送系统（winform版）

--------Form1后台-------------------

private void btnSend_Click(object sender, EventArgs e)

{

MailMessage msg = new MailMessage();

msg.Body = this.txtBody.Text;

msg.Subject = this.txtSubject.Text;

msg.From = new MailAddress("邮箱详细账号");

msg.To.Add(this.txtMailAddress.Text);

msg.IsBodyHtml = true;

SmtpClient client = new SmtpClient();

client.Host = "smtp.qq.com";

client.Port = 25;

NetworkCredential credetial = new NetworkCredential();

credetial.UserName = "@之前的部分";

credetial.Password = "邮箱密码";

client.Credentials = credetial;

Attachment att = new Attachment(this.txtFuJian.Text);

msg.Attachments.Add(att);

client.Send(msg);

MessageBox.Show("邮件发送成功");

}

private void btnTianJia_Click(object sender, EventArgs e)

{

if (this.openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)

{

this.txtFuJian.Text = this.openFileDialog1.FileName;

}

}