C # mail delivery (with attachments)

classSendEmail {Static voidMain (string[] args) {            string  from="Sender @yingu.com"; stringFromer ="Zhaohai"; stringto ="recipient @yingu.com"; stringToer ="Liu Chun Xi"; stringSubject ="Overdue Data Report"; stringFile =string. Concat (System.AppDomain.CurrentDomain.BaseDirectory,"reprotingtemp\\ List of overdue orders. xls"); stringBody ="Overdue Data Report"; //Enterprise Mailbox SMTP            stringSMTPHost ="smtp.qiye.163.com"; stringSmtpuser ="Sender @yingu.com"; stringSmtppass ="****** (sender's mailbox password)"; SendMail ( from, Fromer, to, Toer, Subject, Body, file, SMTPHost, Smtpuser, Smtppass); }        /// <summary>        ///C # send mail function/// </summary>        /// <param name= "from" >Sender's Mailbox</param>        /// <param name= "Fromer" >Sending Person</param>        /// <param name= "to" >recipients ' mailboxes</param>        /// <param name= "Toer" >Recipient</param>        /// <param name= "Subject" >Theme</param>        /// <param name= "Body" >content</param>        /// <param name= "file" >Accessories</param>        /// <param name= "SMTPHost" >SMTP Server</param>        /// <param name= "Smtpuser" >Email</param>        /// <param name= "Smtppass" >Password</param>        /// <returns></returns>        Private Static BOOLSendMailstringSfrom,stringSfromer,stringStostringStoer,stringSsubject,stringSbody,stringSfilestringSsmtphost,stringSsmtpuser,stringSsmtppass) {            ////set from and to addressesMailAddress from=Newmailaddress (Sfrom, Sfromer); MailAddress to=Newmailaddress (STO, stoer); ////Create a MailMessage objectMailMessage Omail =NewMailMessage ( from, to); ////Add Attachment            if(Sfile! ="") {OMAIL.ATTACHMENTS.ADD (NewAttachment (sfile)); }            ////Mail HeaderOmail.subject =Ssubject; ////email ContentOmail.body =Sbody; ////Mail Formatomail.isbodyhtml =false; ////The encoding used in the messageomail.bodyencoding = System.Text.Encoding.GetEncoding ("GB2312"); ////Set message priority to highOmail.priority =Mailpriority.high; ////Send mailSmtpClient client =NewSmtpClient (); ////client. useDefaultCredentials = false;Client. Host =Ssmtphost; //Enterprise mailbox need to set up a port, personal mailbox does not needClient. Port = -; Client. Credentials=NewNetworkCredential (Ssmtpuser, Ssmtppass); Client. Deliverymethod=smtpdeliverymethod.network; Try{client.                Send (Omail); return true; }            Catch(Exception err) {//Response.Write (Err. Message.tostring ());                return false; }            finally            {                ////Release ResourcesOmail.dispose (); }        }    }

C # mail delivery (with attachments)