邮件发送问题?
按照书上的说法做了一个发送邮件的程序,下面是"发送"按钮的代码:"单击此按钮后出现错误提示。请问这是什么原因,多谢高手
private void bntEmail_Click(object sender, System.EventArgs e)
{
MailMessage mymsg=new MailMessage ();
(收件人) mymsg.From =tbform.Text ;
(发件人) mymsg.To =tbto.Text ;
(抄送) mymsg.Cc =tbcc.Text ;
(暗送) mymsg.Bcc =tbbcc.Text ;
(主题) mymsg.Subject =tbsubject.Text ;
(优先级) mymsg.Priority =(MailPriority)tbyou.SelectedIndex ;
(邮件格式) mymsg.BodyFormat =(MailFormat)tbformat.SelectedIndex;
(邮件内容) mymsg.Body =tbbody.Text ;
try
{
SmtpMail.Send(mymsg);
emailshowok.Text ="邮件发送成功!";
tbform.Text ="";
tbto.Text ="";
tbcc.Text ="";
tbbcc.Text ="";
tbsubject.Text ="";
tbbody.Text ="";
tbPriority.SelectedIndex =1;
tbFormat.SelectedIndex =0;
}
catch(Exception ee)
{
SendMessage.Text ="邮件发送失败"+ee.ToString ();
}