/// <summary>
    /// 发送邮件
    /// </summary>
    /// <param name="fromEmail">发件人</param>
    /// <param name="fromPsaaWord">发件人密码</param>
    /// <param name="toEmail">收件人</param>
    /// <param name="subject">主题</param>
    /// <param name="body">内容</param>
    /// <param name="attachmentsPath">附件（如果没有写为null）</param>
    /// <returns></returns>
    public bool SendReady(string fromEmail, string fromPsaaWord, string toEmail, string subject, string body, string[] attachmentsPath)
    {
        bool Success = true;
        //验证合法邮箱的表达式,正确时返回true
        if (!Regex.IsMatch(fromEmail, @"^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$"))
        {
            //邮箱不合法
            //MessageBox("邮箱不合法");
            Success = false;
        }
        if (!Regex.IsMatch(toEmail, @"^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$"))
        {
            Success = false;
        }
        if (subject.Trim() == "")
        {
            // MessageBox("请填写主题");
            Success = false;
        }
        if (body.Trim() == "")
        {
            // MessageBox("请填写内容");
            Success = false;
        }
        else
        {
            MailAddress from = new MailAddress(fromEmail);
            //收件人地址
            MailAddress to = new MailAddress(toEmail);
            //邮件主题、内容
            MailMessage message = new MailMessage(from, to);
            //主题
            message.Subject = subject;
            message.SubjectEncoding = System.Text.Encoding.UTF8;
            //内容
            message.Body = body;
            message.BodyEncoding = System.Text.Encoding.UTF8;
            //在有附件的情况下添加附件
            try
            {
                if (attachmentsPath != null && attachmentsPath.Length > 0)
                {
                    Attachment attachFile = null;
                    foreach (string path in attachmentsPath)
                    {
                        attachFile = new Attachment(path);
                        message.Attachments.Add(attachFile);
                    }
                }
            }
            catch (Exception err)
            {
                // MessageBox("在添加附件时有错误");
                Success = false;
                //throw new Exception("在添加附件时有错误:" + err);

            }
            try
            {
                //大部分邮件服务器均加smtp.前缀
                SmtpClient client = new SmtpClient("smtp." + from.Host);
                
                //不使用默认凭证,注意此句必须放在client.Credentials的上面
                client.UseDefaultCredentials = false;
                //指定用户名、密码
                client.Credentials = new NetworkCredential(from.Address, fromPsaaWord);
                //邮件通过网络发送到服务器
                client.DeliveryMethod = SmtpDeliveryMethod.Network;
                try
                {
                    client.Send(message);


                }
                catch (Exception e)
                {
                    Success = false;
                    throw new Exception("系统繁忙,发送失败!");
                  
                }
                finally
                {
                    //及时释放占用的资源
                    message.Dispose();
                }
            }
            catch (SmtpException err)
            {
                Success = false;
                ////如果错误原因是没有找到服务器，则尝试不加smtp.前缀的服务器
                //if (err.StatusCode == SmtpStatusCode.GeneralFailure)
                //{
                //    try
                //    {
                //        //有些邮件服务器不加smtp.前缀
                //        SmtpClient client = new SmtpClient(from.Host);
                //        SendMail(client, from, fromPsaaWord, to, message)//发送;
                //    }
                //    catch (SmtpException)
                //    { }
                //}
                //else
                //{ }
            }
        }
        return Success;
    }