| 用c#写的smtp邮件发送类__教程 |
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| 日期：2007-5-20 1:21:25 人气：114 [大 中 小] |
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mail.MailEncoding.ToString()+"\""+CRLF;
message+="Content-Transfer-Encoding:base64"+CRLF+CRLF;
if(mail.MailBody!=null)
message+=Convert.ToBase64String(mail.MailBody,0,mail.MailBody.Length)+CRLF+CRLF+CRLF+"."+CRLF;
}
else//Html格式
{
message+="Content-Type:multipart/alertnative;"+CRLF+" ".PadRight(8,' ')+"boundary"
+"=\"=====003_Dragon310083331177_=====\""+CRLF+CRLF+CRLF;
message+="This is a multi-part message in MIME format"+CRLF+CRLF;
message+="--=====003_Dragon310083331177_====="+CRLF;
message+="Content-Type:text/html;"+CRLF+" ".PadRight(8,' ')+"charset=\""+
mail.MailEncoding.ToString().ToLower()+"\""+CRLF;
message+="Content-Transfer-Encoding:base64"+CRLF+CRLF;
if(mail.MailBody!=null)
message+=Convert.ToBase64String(mail.MailBody,0,mail.MailBody.Length)+CRLF+CRLF;
message+="--=====003_Dragon310083331177_=====--"+CRLF+CRLF+CRLF+"."+CRLF;
}
}
else//有附件
{
//处理要在邮件中显示的每个附件的数据
StringCollection attatchmentDatas=new StringCollection();
foreach(string path in mail.Attachments)
{
if(!File.Exists(path))
{
this.setError("指定的附件没有找到"+path);
}
else
{
//得到附件的字节流
FileInfo file=new FileInfo(path);
FileStream fs=new FileStream(path,FileMode.Open,FileAccess.Read);
if(fs.Length>(long)int.MaxValue)
{
this.setError("附件的大小超出了最大限制");
}
byte[] file_b=new byte[(int)fs.Length];
fs.Read(file_b,0,file_b.Length);
fs.Close();
string attatchmentMailStr="Content-Type:application/octet-stream;"+CRLF+" ".PadRight(8,' ')+"name="+
"\""+file.Name+"\""+CRLF;
attatchmentMailStr+="Content-Transfer-Encoding:base64"+CRLF;
attatchmentMailStr+="Content-Disposition:attachment;"+CRLF+" ".PadRight(8,' ')+"filename="+
"\""+file.Name+"\""+CRLF+CRLF;
attatchmentMailStr+=Convert.ToBase64String(file_b,0,file_b.Length)+CRLF+CRLF;
attatchmentDatas.Add(attatchmentMailStr);
}
}
//设置邮件信息
if(mail.MailType==MailTypes.Text) //文本格式
{
message+="Content-Type:multipart/mixed;"+CRLF+" ".PadRight(8,' ')+"boundary=\"=====001_Dragon320037612222_=====\""
+CRLF+CRLF;
message+="This is a multi-part message in MIME format."+CRLF+CRLF;
message+="--=====001_Dragon320037612222_====="+CRLF;
message+="Content-Type:text/plain;"+CRLF+" ".PadRight(8,' ')+"charset=\""+mail.MailEncoding.ToString().ToLower()+"\""+CRLF;
message+="Content-Transfer-Encoding:base64"+CRLF+CRLF;
if(mail.MailBody!=null)
message+=Convert.ToBase64String(mail.MailBody,0,mail.MailBody.Length)+CRLF;
foreach(string s in attatchmentDatas)
{
message+="--=====001_Dragon320037612222_====="+CRLF+s+CRLF+CRLF;
}
message+="--=====001_Dragon320037612222_=====--"+CRLF+CRLF+CRLF+"."+CRLF;
}
else
{
message+="Content-Type:multipart/mixed;"+CRLF+" ".PadRight(8,' ')+"boundary=\"=====001_Dragon255511664284_=====\""
+CRLF+CRLF;
message+="This is a multi-part message in MIME format."+CRLF+CRLF; |
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| 出处：本站原创 作者：佚名 |
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