C#数据库邮件列表发送邮件

 1  using System;
 2      using System.Net;
 3      using System.Net.Mail;
 4      using System.Text;
 5      using System.Threading;
 6 
 7      public  class test
 8     {
 9          delegate  void sendDelegate( string  fromstring to,  string subject,  string body,  string host,  int port,  string userName,  string password);
10          ///   <summary>
11           ///  发送电子邮件
12           ///   </summary>
13           ///   <param name="from"> 发件人 </param>
14           ///   <param name="to"> 收件人 </param>
15           ///   <param name="subject"> 邮件主题 </param>
16           ///   <param name="body"> 邮件内容 </param>
17           ///   <param name="host"> 发送服务地址(smtp.qq.com) </param>
18           ///   <param name="port"> 发送邮件服务器端口(25) int型 </param>
19           ///   <param name="userName"> 用户名 </param>
20           ///   <param name="password"> 密码 </param>
21           public  void sendmail( string  fromstring to,  string subject,  string body,  string host,  int port,  string userName,  string password)
22         {
23             MailMessage message =  new MailMessage( from, to, subject, body);
24             message.IsBodyHtml =  true;
25 
26             message.BodyEncoding = MediaTypeNames.Text.Encoding.UTF8;
27             message.Attachments.Add( new Attachment( " c:\\log.log "));
28             SmtpClient client =  new SmtpClient(host, port);
29             client.Credentials =  new NetworkCredential(userName, password);
30             client.DeliveryMethod = SmtpDeliveryMethod.Network;
31             client.Send(message);
32         }
33          public  void sby()
34         {
35             SqlConnection conn =  new SqlConnection();
36             conn.ConnectionString =  " Data Source=(local);Integrated Security=SSPI;Initial Catalog=db_showHouse ";    // 打开连接
37              conn.Open();
38             SqlCommandcmd =  new SqlCommand( " select Email from Employee ", conn);
39             SqlDataReader drNew = cmd.ExecuteReader();
40              if (drNew.HasRows)
41             {
42                  while (drNew.Read())
43                      new sendDelegate(sendmail).BeginInvoke( " [email protected] ", drNew[ 0].ToString(),  " subject "" body "" smtp.somescompany.com "25" userName "" password ");
44             }
45             drNew.Close();
46         }
47     }

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