ASP. NET Send mail

First, add a namespaceusingSystem.Net.Mail; /// <summary>        ///Send mail/// </summary>        /// <param name= "Sender" ></param>        /// <param name= "E" ></param>        protected voidFormail (stringNamestringMail) {            Try            {                //string email = txtemail. Text.trim ();MailAddress Messagefrom =NewMailAddress (""Outbox Address"");//Sender e-mail address                stringmessageto = mail;//Recipient Email Address                stringMessageSubject = BS. HtmlEncode (Web_zt. Value.trim ());//Message Subject                stringMessageBody =""+ Content1. Value.trim () +"";//message content (usually a URL link, generate random number plus verification ID parameters, click to go to site verification. ) ";                if(Send (Messagefrom, Messageto, MessageSubject, MessageBody)) {//Response.Write ("Send mail Success");                }                Else                {                    //Response.Write ("Failed to send mail");                }            }            Catch            {                //Clientscript.registerstartupscript (Clientscript.gettype (), "MyScript", "<script>alert (' Customer information deletion failed ') </ Script> ");            }        }        /// <summary>        ///send e-mail/// </summary>        /// <param name= "Messagefrom" >Sender e-mail address</param>        /// <param name= "Messageto" >Recipient Email Address</param>        /// <param name= "MessageSubject" >Message Subject</param>        /// <param name= "MessageBody" >Message Content</param>        /// <returns></returns>         Public BOOLSend (MailAddress Messagefrom,stringMessageto,stringMessageSubject,stringmessagebody) {MailMessage message=NewMailMessage (); Message. from=Messagefrom; Message. To.add (Messageto); //The recipient email address can be multiple to achieve massMessage. Subject =MessageSubject; Message. Body=MessageBody; Message. Isbodyhtml=true;//is HTML formatMessage. priority = Mailpriority.normal;//priority level for sending messagesSmtpClient sc =NewSmtpClient (); Sc. Host="smtp.qq.com";//Specify the server address or IP to send mail toSc. Port = -;//Specify the Send mail portSc. Credentials =NewSystem.Net.NetworkCredential (""Outbox Address"",""Outbox Password"");//Specify the user name and password of the login server (sender's mailbox login password)            Try{SC. Send (message); //Send mail            }            Catch            {                return false; }            return true; }

ASP. NET Send mail