.net开发之邮件发送

1、新建项目，命名为通过程序来发邮件，如下图所示：

2、邮件发送需要引入两个头文件，如下图所示：

3、演示一封纯文本邮件发送例子，如下图所示，代码如下。#region 发一封普通的邮件（纯文本） Console.WriteLine("开始发送邮件...."); //1.MailMessage //1.创建一封邮件 MailMessage msg = new MailMessage(); msg.From = new MailAddress("gy@cheshi.net"); msg.To.Add(new MailAddress("lb@cheshi.net")); msg.Subject = "去给我带份饭。"; msg.SubjectEncoding = Encoding.GetEncoding("gb2312"); msg.Body = "在中午12:00之前把饭送过来。"; //2.SmtpClient SmtpClient smtp = new SmtpClient(); smtp.Host = "localhost"; smtp.Credentials = new NetworkCredential("sk", "123"); smtp.Send(msg); Console.WriteLine("发送完毕！"); Console.ReadKey(); #endregion

4、在邮件的发送过程中，经常会用到需要发送html格式的情况，下面演示这种情况：#region 发html格式邮件，第一种方式 Console.WriteLine("开始发送邮件...."); //1.MailMessage //1.创建一封邮件 MailMessage msg = new MailMessage(); msg.From = new MailAddress("gy@cheshi.net"); msg.To.Add(new MailAddress("liubei@cheshi.net")); msg.Subject = "去给我带份饭。"; msg.SubjectEncoding = Encoding.GetEncoding("gb2312"); msg.Body = "在中午<font color=\"red\"><h1>12:00</h1></font>之前把饭送过来。"; //设置文本正文是否是html格式的。 msg.IsBodyHtml = true; //2.SmtpClient SmtpClient smtp = new SmtpClient(); smtp.Host = "localhost"; smtp.Credentials = new NetworkCredential("sk", "123"); smtp.Send(msg); Console.WriteLine("发送完毕！"); Console.ReadKey(); #endregion

5、下面演示html格式邮件发送的另一种方式：#region 发送html格式的邮件 ，第二种方式 Console.WriteLine("开始发送邮件...."); //1.MailMessage //1.创建一封邮件 MailMessage msg = new MailMessage(); msg.From = new MailAddress("sk@cheshi.net"); msg.To.Add(new MailAddress("yzk@cheshi.net")); msg.Subject = "======去给我带份饭。======="; msg.SubjectEncoding = Encoding.GetEncoding("gb2312"); msg.Body = "==================在中午12:00之前把饭送过来。================"; //创建一个html格式的文档 AlternateView aview = AlternateView.CreateAlternateViewFromString("在中午<h1><font color=\"red\">12:00</font></h1>之前把饭送过来。", Encoding.UTF8, "text/html"); msg.AlternateViews.Add(aview); //2.SmtpClient SmtpClient smtp = new SmtpClient(); smtp.Host = "localhost"; smtp.Credentials = new NetworkCredential("sk", "123"); smtp.Send(msg); Console.WriteLine("发送完毕！"); Console.ReadKey(); #endregion

6、在邮件在插入图片发送，这个是非常常见的：#region 在邮件中带图片 觊皱筠桡Console.WriteLine("开始发逭瑗亍作送邮件...."); //1.MailMessage //1.创建一封邮件 MailMessage msg = new MailMessage(); msg.From = new MailAddress("sk@cheshi.net"); msg.To.Add(new MailAddress("yzk@cheshi.net")); msg.Subject = "======去给我带份饭。======="; msg.SubjectEncoding = Encoding.GetEncoding("gb2312"); msg.Body = "==================在中午12:00之前把饭送过来。================"; //创建一个html格式的文档 AlternateView aview = AlternateView.CreateAlternateViewFromString("在中午<h1><font color=\"red\">12:00</font></h1>之前把饭送过来。<br/><img src=\"cid:img001\"/>", Encoding.UTF8, "text/html"); //为邮件中增加一张图片 LinkedResource resource = new LinkedResource(@"c:\toYou.gif"); resource.ContentId = "img001"; aview.LinkedResources.Add(resource); msg.AlternateViews.Add(aview); //2.SmtpClient SmtpClient smtp = new SmtpClient(); smtp.Host = "localhost"; smtp.Credentials = new NetworkCredential("sk", "123"); smtp.Send(msg); Console.WriteLine("发送完毕！"); Console.ReadKey(); #endregion

7、最后引入一种，在邮件中加入附件发送： #region 在邮件中增加附件 Console.WriteLine("开始发送邮围泠惶底件...."); //1.MailMessage //1.创建一封邮件 MailMessage msg = new MailMessage(); msg.From = new MailAddress("sk@ceshi.net"); msg.To.Add(new MailAddress("yzk@ceshi.net")); msg.Subject = "======去给我带份饭。======="; msg.SubjectEncoding = Encoding.GetEncoding("gb2312"); msg.Body = "==================在中午12:00之前把饭送过来。================"; //创建一个html格式的文档 AlternateView aview = AlternateView.CreateAlternateViewFromString("在中午<h1><font color=\"red\">12:00</font></h1>之前把饭送过来。<br/><img src=\"cid:img001\"/>", Encoding.UTF8, "text/html"); //为邮件中增加一张图片 LinkedResource resource = new LinkedResource(@"c:\toYou.gif"); resource.ContentId = "img001"; aview.LinkedResources.Add(resource); msg.AlternateViews.Add(aview); //为邮件增加一些附件 Attachment attchFile1 = new Attachment(@"c:\1.xls"); Attachment attchFile2 = new Attachment(@"c:\a.gif"); Attachment attchFile3 = new Attachment(@"c:\a.jpg"); msg.Attachments.Add(attchFile1); msg.Attachments.Add(attchFile2); msg.Attachments.Add(attchFile3); //2.SmtpClient SmtpClient smtp = new SmtpClient(); smtp.Host = "localhost"; //smtp.qq.com smtp.Credentials = new NetworkCredential("sk", "123"); smtp.Send(msg); Console.WriteLine("发送完毕！"); Console.ReadKey(); #endregion