Method of Sending Mail by Database Mail List Based on C

This article illustrates the method of C # to send mail by database mailing list. Share it for your reference. The specific implementation method is as follows:

using System;
using System.Net;
using System.Net.Mail;
using System.Text;
using System.Threading;
delegate void sendDelegate(string from, string to, string subject, string body, string host, int port, string userName, string password);
/// <summary>
///  Send e-mail 
/// </summary>
/// <param name="from"> Sender </param>
/// <param name="to"> Recipient </param>
/// <param name="subject"> Mail Subject </param>
/// <param name="body"> Mail content </param>
/// <param name="host"> Send service address (smtp.qq.com)</param>
/// <param name="port"> Outgoing mail server port (25) int Type </param>
/// <param name="userName"> User name </param>
/// <param name="password"> Password </param>
public void sendmail(string from, string to, string subject, string body, string host, int port, string userName, string password)
{
 MailMessage message = new MailMessage(from, to, subject, body);
 message.IsBodyHtml = true;
 message.BodyEncoding = Text.Encoding.UTF8;
 message.Attachments.Add(new Attachment("c:\\log.log"));
 SmtpClient client = new SmtpClient(host, port);
 client.Credentials = new NetworkCredential(userName, password);
 client.DeliveryMethod = SmtpDeliveryMethod.Network;
 client.Send(message);
}
SqlConnection conn = new SqlConnection();
conn.ConnectionString = "Data Source=(local);Integrated Security=SSPI;Initial Catalog=db_showHouse";  　　 // Open a connection 
conn.Open();
SqlCommandcmd = new SqlCommand("select Email from Employee", conn);
SqlDataReader drNew = cmd.ExecuteReader();
if (drNew.HasRows)
{
 while (drNew.Read())
  new sendDelegate(sendmail).BeginInvoke("someone@somecompany.com",drNew[0].ToString(),"subject","body","smtp.somescompany.com",25,"userName","password");
}
drNew.Close();

I hope this article is helpful to everyone's C # programming.