.net 发邮件

//图片将以附件方式发送

ContentType ct = new ContentType();
      ct.MediaType = MediaTypeNames.Image.Jpeg;
      Attachment data = new Attachment(filePath + "Images/email.png", ct);
      data.ContentId = "Email3";
      mail.Attachments.Add(data);

//图片插入正文中

　　AlternateView htmlBody = AlternateView.CreateAlternateViewFromString(body, null, "text/html");
　　string filePath = AppDomain.CurrentDomain.BaseDirectory;
　　ContentType Jpeg = new ContentType();//设置文件类型
　　Jpeg.MediaType = MediaTypeNames.Image.Jpeg;
　　LinkedResource lrImage = new LinkedResource(filePath + "Images/11floor.jpg", Jpeg);
　　lrImage.ContentId = "Email001";
　　htmlBody.LinkedResources.Add(lrImage);