c#发送邮件

    /// <summary>
        /// 邮件发送
        /// </summary>
        /// <param name="strTo">收信对象邮箱</param>
        /// <param name="strSubject">邮件主题</param>
        /// <param name="strBody">邮件内容</param>
        public  bool SendEmail(string strTo, string strSubject, string strBody)
        {
            //string strSmtpServer = "smtp.163.com"; //163邮件服务器
            string strSmtpServer = "smtp.qq.com"; //qq邮件服务器
            string strFrom = "用户邮箱"; //用户邮箱
            string strFromPass = "用户密码";//用户密码

            //string strSmtpServer = "202.108.3.190"; //新浪邮件服务器
            SmtpClient client = new SmtpClient(strSmtpServer);//创建邮箱服务器对象          

            client.UseDefaultCredentials = false;//获取或设置是否使用默认凭据访问 Web 代理服务器
            client.Credentials = new System.Net.NetworkCredential(strFrom, strFromPass);//创建用户对象
            client.DeliveryMethod = SmtpDeliveryMethod.Network;//投递方式

            MailMessage message = new MailMessage();    //创建邮件对象
            message.From = new MailAddress(strFrom, "施强留学网");    //发信人地址
            message.To.Add(strTo);                      //添加收信人地址
            message.Subject = strSubject;               //邮件主题
            message.Body = strBody;                     //邮件内容

            //当然，你也把上面五条语句简化为如下：
            //MailMessage message = new MailMessage(strFrom, strto, strSubject, strBody);
            //添加附件,要注意的是，发送附件可能会慢点，耐心等下！
            //Attachment attachment = new Attachment("e://a.xls");   //创建附件对象，括号内参数为要添加的附件所在的地址
            // message.Attachments.Add(attachment);                      //添加到邮件

            message.BodyEncoding = System.Text.Encoding.UTF8;//获取或设置用于邮件正文的编码

            message.IsBodyHtml = true;//取得或设定值，指出电子邮件的主体是否为 HTML
            if (!string.IsNullOrEmpty(strBody))//判断邮件内容是否为空
            {
                try
                {
                    client.Send(message);//发送
                    return true;
                }
                catch (Exception ex)
                {

                    return false;
                }
            }
            else
            {

                return false;
            }
        }