Geting error ---object reference not set to an instance---at bold line----plz reply

[rksadhi]

/*Geting error ---object reference not set to an instance---at bold line----plz reply asap thanks in advance*/


cmd = new OleDbCommand ("SELECT e.emp_id,e.emai l, m.email AS Email FROM emp_details e INNER JOIN emp_details m ON e.spid = m.emp_id AND e.emp_id='" + e_id + "'",conn);
dr=cmd.ExecuteR eader();
if(dr.Read())
{
strmail=dr["email"].ToString();
strmailto=dr["Email"].ToString();
}
dr.Close();
MailMessage mail=new MailMessage();
mail.To=strmail to;
mail.From = strmail ;
mail.Subject="L eave Application From";
//mail.Body= Mam & s & txtremak.Text ;
mail.Body=txtre mark.Text;
mail.BodyFormat =MailFormat.Htm l;
mail.Priority = MailPriority.No rmal;
mail.Fields.Add ("http://schemas.microso ft.com/cdo/configuration/smtpserver","lo calhost");
mail.Fields.Add ("http://schemas.microso ft.com/cdo/configuration/smtpserverport" ,"25");
mail.Fields.Add ("http://schemas.microso ft.com/cdo/configuration/sendusing", "2");
mail.Fields.Add ("http://schemas.microso ft.com/cdo/configuration/smtpauthenticat e","1");
mail.Fields.Add ("http://schemas.microso ft.com/cdo/configuration/sendusername"," [e-mail]");
mail.Fields.Add ("http://schemas.microso ft.com/cdo/configuration/sendpassword"," abc123");
SmtpMail.SmtpSe rver.Insert(0," localhost");
SmtpMail.Send(m ail);
conn.Close();

[kenobewan]

I see the problem as being the line before - mail.Body=txtre mark.Text;.

[rksadhi]

i did at own... its very easy...