> Thanks for your answer. But following your advice,I set the
> mailObj.IsBodyHtml as false and mailObj.BodyEncoding as
> System.Text.Encoding.ASCII,it still failed with the same error
message,Could
> you further explain for me?
>
> Crespo
> "Nick Malik [Microsoft]" <nickmalik@hotmail.nospam.com> дÈëÏûÏ¢
> news:lrKdnfF4TPCOdTnZnZ2dnUVZ_t6dnZ2d@comcast.com...
> see answer in microsoft.public.dotnet.languages.csharp
>
> --
> --- Nick Malik [Microsoft]
> MCSD, CFPS, Certified Scrummaster
> http://blogs.msdn.com/nickmalik
>
> Disclaimer: Opinions expressed in this forum are my own, and not
> representative of my employer.
> I do not answer questions on behalf of my employer. I'm just a
> programmer helping programmers.
> --
> "Crespo" <wuhuanfa@21cn.com> wrote in message
> news:eCkAQA$mGHA.3544@TK2MSFTNGP05.phx.gbl...
> > hi,everybody
> > I use dotnet 2005 and c sharp to deliever a mail to a certain mail
> > address,but it failed with messages such as "invalid parameter,the
server
> > response: decode failed". My codes is listed belowed:
> > try
> > {
> > MailMessage mailObj = new MailMessage();
> > mailObj.To.Add("wuhuanfa@hotmail.com");
> > mailObj.From = new MailAddress(crespo1973@21cn.com);
> >
> > mailObj.Subject = "Óʼþ²âÊÔ";
> > mailObj.Body = "ºÍѶÓʼþ½ÓÊÕ²âÊԳɹ¦! ";
> >
> > mailObj.IsBodyHtml = true;
> > mailObj.Priority = MailPriority.High;
> > mailObj.BodyEncoding = System.Text.Encoding.UTF8;
> >
> > System.Net.Mail.SmtpClient client = new
> > System.Net.Mail.SmtpClient("smtp.21cn.com");
> > client.UseDefaultCredentials = false;
> >
> > client.Credentials = new
> > System.Net.NetworkCredential("crespo1973@21cn.com",
> > this.tb_mailUserPassword.Text);
> > client.DeliveryMethod = SmtpDeliveryMethod.Network;
> >
> > client.Send(mailObj);
> >
> > }
> > catch(Exception ex)
> > {
> > MessageBox.Show(ex.Message.ToString());
> > return;
> > }
> >
> > crespo1973@21cn.com is a correct account of mail.21cn.com,Could anyone
> > help me?
> >
> >
> > Crespo
> > 2006-06-30
> >
> >
> >
>