if (fname != "")
    {
        string a = fname;
        string[] b = Regex.Split(a, ",", RegexOptions.IgnoreCase);
        string c = "";
        for (int i = 0; i < b.Length; i++)
        {
            c = "E:/Program Files/DltechNot/LiveFlowNet V5.3/WebSite/LiveFlowWeb/upload/" + ffile + "/" + b[i];
            mail.Attachments.Add(new Attachment(c));
        }
    }

    mail.DeliveryNotificationOptions = DeliveryNotificationOptions.OnSuccess;
    SmtpClient client = new SmtpClient();
    client.Host = "smtp.sina.com";
    client.Port = 25;
    client.UseDefaultCredentials = false;
    client.Credentials = new System.Net.NetworkCredential("发件人邮箱", "密码");
    client.DeliveryMethod = SmtpDeliveryMethod.Network;
    client.Send(mail);
    ScriptManager.RegisterStartupScript(this.Page, typeof(Page), "Sucess", "alert('邮件发送成功！');", true);

    
}