C#实现按数据库邮件列表发送邮件的方法

本文实例讲述了c#实现按数据库邮件列表发送邮件的方法。分享给大家供大家参考。具体实现方法如下：

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>
/// 发送电子邮件
/// </summary>
/// <param name="from">发件人</param>
/// <param name="to">收件人</param>
/// <param name="subject">邮件主题</param>
/// <param name="body">邮件内容</param>
/// <param name="host">发送服务地址(smtp.qq.com)</param>
/// <param name="port">发送邮件服务器端口(25) int型</param>
/// <param name="username">用户名</param>
/// <param name="password">密码</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"; 　　//打开连接
conn.open();
sqlcommandcmd = new sqlcommand("select email from employee", conn);
sqldatareader drnew = cmd.executereader();
if (drnew.hasrows)
{
 while (drnew.read())
  new senddelegate(sendmail).begininvoke("[e-mail]",drnew[0].tostring(),"subject","body","smtp.somescompany.com",25,"username","password");
}
drnew.close();

希望本文所述对大家的c#程序设计有所帮助。