ASP.NET how to write code for mail sender? -

i have search many sites. can't understatnd said. refer in internet told create cdo files.

please me send mail in project. have 3 textboxes:

1. tomail
2. heading
3. content of message
4. send button

use below code sent mail.

            mailmessage mail = new mailmessage();             smtpclient smtpserver = new smtpclient("smtp.gmail.com");              mail.from = new mailaddress("me@mydomain.com");             mail.to.add("u@urdomain.com,rkrishtring@gmail.com");             mail.subject = "report";             mail.body = "this stack overflow using report";             attachment attachment = new attachment(filename);             mail.attachments.add(attachment);              smtpserver.port = 25;             smtpserver.credentials = new system.net.networkcredential("username", "password");             smtpserver.enablessl = true;              smtpserver.send(mail);