C#中如何利用Gmail账户发送邮件

 

private void button_send_Click(object sender, EventArgs e){    //Short Method                SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587);    smtp.UseDefaultCredentials = false;    smtp.Credentials = new NetworkCredential("username","password");    smtp.EnableSsl = true;    smtp.Send("[e-mail]", "receiver", "subject", "Email Body");     //Detailed Method                MailAddress mailfrom = new MailAddress("[e-mail]");    MailAddress mailto = new MailAddress("[e-mail]");    MailMessage newmsg = new MailMessage(mailfrom, mailto);     newmsg.Subject = "Subject of Email";    newmsg.Body = "Body(message) of email";     //For File Attachment, more file can also be attached    Attachment att = new Attachment("C://...file path");    newmsg.Attachments.Add(att);     SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587);    smtp.UseDefaultCredentials = false;    smtp.Credentials = new NetworkCredential("username","password");    smtp.EnableSsl = true;    smtp.Send(newmsg);    }