What is wrong here?

[Andrew]

Hi, friends,

I have a function which send email with attachments as the follows:

public int SendEmailWithAt tachment(string fromEmailAddres s,
string toEmailAddress, string subject, string message, string attachment)
{
System.Web.Mail .MailMessage mm = new System.Web.Mail .MailMessage();
mm.From = fromEmailAddres s;
mm.To = toEmailAddress;
mm.Subject = subject;
mm.Body = message;
mm.BodyFormat = System.Web.Mail .MailFormat.Tex t;
mm.Priority = System.Web.Mail .MailPriority.N ormal;
mm.BodyEncoding = System.Text.Enc oding.Default;
mm.UrlContentBa se = "";
mm.UrlContentLo cation = "";

if (attachment.Tri m() != "")
{
char[] delim = new char[] {','};
foreach (string sSubstr in attachment.Spli t(delim))
{
System.Web.Mail .MailAttachment ma = new
System.Web.Mail .MailAttachment (sSubstr);
mm.Attachments. Add(ma);
}
}

System.Web.Mail .SmtpMail.SmtpS erver = ""; //default
System.Web.Mail .SmtpMail.Send( mm);
return 1;
}

It works fine if the if (attachment.Tri m() != "") {...} block is NOT
executed. However, if this block IS executed (i.e., having attachment), I got
an error saying:
Could not access 'CDO.Message' object.

But, I really could not find what was wrong. Any ideas, suggestions, etc.?
Thanks a lot.