利用smtp发邮件

小功能，备忘

        　　MailMessage objMailMessage = new MailMessage();//引入System.Net

            objMailMessage.From = new MailAddress("**@sina.com");//源邮件地址 (发件人地址)
            objMailMessage.To.Add(new MailAddress("**@163.com"));//目的邮件地址(收件人地址)。可以有多个收件人,用逗号隔开
            objMailMessage.BodyEncoding = System.Text.Encoding.UTF8;//文本字符编码
            objMailMessage.Subject = "This is test";//邮件标题
            StringBuilder Builder = new StringBuilder();//构建邮件文本内容，内容都采用标签形式
            Builder.Append("Hi,Pippo<br/><br/> This is testing Email.");//文字
            Builder.Append("<a href='http://www.baidu.com'>请单击链接</a>");//网址链接
            Builder.Append("<image src='http://www.zhituad.com/photo2/00/87/68/91b1OOOPIC4e.jpg'></image>");//图片

            objMailMessage.Body = Builder.ToString();
            objMailMessage.IsBodyHtml = true;//可以以HTML方式查看邮件内容

</pre><pre name="code" class="csharp"><span style="white-space:pre">	</span>    string file=@"";//附件路径
            System.Net.Mail.Attachment data = new System.Net.Mail.Attachment(file, MediaTypeNames.Application.Octet);

<span style="white-space:pre">	</span>    ContentDisposition disposition = data.ContentDisposition;
            disposition.CreationDate = System.IO.File.GetCreationTime(file);
            disposition.ModificationDate = System.IO.File.GetLastWriteTime(file);
            disposition.ReadDate = System.IO.File.GetLastAccessTime(file);
            // Add the file attachment to this e-mail message.
            objMailMessage.Attachments.Add(data);//添加附件

            SmtpClient objSmtpClient = new SmtpClient();
            objSmtpClient.Host = "smtp.sina.com";//smtp.sina.com，smtp.qq.com;指定发送邮件服务器(Smtp服务器，根据发件人所使用的邮箱进行配置)
            objSmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
            objSmtpClient.Credentials = new System.Net.NetworkCredential("**.com", "**");指定发件人的邮箱的密码与用户名(网站管理员。)
            //objSmtpClient.EnableSsl = true;//SMTP 服务器要求安全连接需要设置此属性

            try
            {
                objSmtpClient.Send(objMailMessage);
                MessageBox.Show("ok");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }