.net 2.0 邮件发送

     private   const   string  FromAddress  =   " Mail@LiCeRForDream.com " ;

     protected   void  Page_Load( object  sender, EventArgs e)
     ... {

     }
     protected   void  Button1_Click( object  sender, EventArgs e)
     ... {
        System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage();
        //收件人
        message.To.Add(txtMailAddress.Text);
        //抄送
        foreach(string mailAddress in txtCopyAddress.Text.Split(','))
        ...{
            if (!string.IsNullOrEmpty(mailAddress))
            ...{
                message.CC.Add(mailAddress);
            }
        }        
        //主题
        message.Subject = txtSubject.Text;
        message.From = new System.Net.Mail.MailAddress(FromAddress);
        message.Body = txtMailContents.Text;
        //发送附件
        if (fulAttachment.HasFile)
        ...{
            System.Net.Mail.Attachment attachment = new System.Net.Mail.Attachment(fulAttachment.PostedFile.FileName);
            message.Attachments.Add(attachment);
        }
        System.Net.Mail.SmtpClient smtp = new System.Net.Mail.SmtpClient("localhost");//SMTP服务器地址
        try
        ...{            
            smtp.Send(message);
            lblReturnMessage.Text = "Mail Send Success!";
        }
        catch (System.Net.Mail.SmtpException ex)
        ...{
            lblReturnMessage.Text = "Send Error:" + ex.Message;
        }
    }

using  System.Net;

< form  id ="form1"  runat ="server" >
     < div >
         < asp:Label  ID ="Label1"  runat ="server"  Text ="Email Address:"  Width ="120px" ></ asp:Label >
         < asp:TextBox  ID ="txtMailAddress"  runat ="server"  Width ="300px" ></ asp:TextBox >
         < asp:RequiredFieldValidator  ID ="RequiredFieldValidator1"  runat ="server"  ControlToValidate ="txtMailAddress"
            ErrorMessage ="Please Type Mail Address"  Display ="Dynamic" ></ asp:RequiredFieldValidator >
         < asp:RegularExpressionValidator  ID ="RegularExpressionValidator1"  runat ="server"  ControlToValidate ="txtMailAddress"
            ErrorMessage ="Invalidate mail address!"  ValidationExpression ="w+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)*"  Display ="Dynamic" ></ asp:RegularExpressionValidator >< br  />
         < asp:Label  ID ="Label4"  runat ="server"  Text ="Copy To:"  Width ="120px" ></ asp:Label >
         < asp:TextBox  ID ="txtCopyAddress"  runat ="server"  Width ="300px" ></ asp:TextBox >< br  />
         < asp:Label  ID ="Label3"  runat ="server"  Text ="Subject Line:"  Width ="120px" ></ asp:Label >
         < asp:TextBox  ID ="txtSubject"  runat ="server"  Width ="300px" ></ asp:TextBox >
         < asp:RequiredFieldValidator  ID ="RequiredFieldValidator2"  runat ="server"  ControlToValidate ="txtSubject"
            ErrorMessage ="Please Type Suject Line" ></ asp:RequiredFieldValidator >< br  />
         < asp:Label  ID ="Label2"  runat ="server"  Text ="Email Contents:"  Width ="120px" ></ asp:Label >
         < asp:TextBox  ID ="txtMailContents"  runat ="server"  Rows ="5"  TextMode ="MultiLine"  Width ="300px" ></ asp:TextBox >
         &nbsp;&nbsp; < br  />
         < asp:Label  ID ="Label5"  runat ="server"  Text ="Attachment :"  Width ="120px" ></ asp:Label >
         < asp:FileUpload  ID ="fulAttachment"  runat ="server"   />< br  />
         < asp:Button  ID ="Button1"  runat ="server"  OnClick ="Button1_Click"  Text ="Send"   />
         &nbsp;&nbsp;
         < asp:Label  ID ="lblReturnMessage"  runat ="server"  Text ="Label" ></ asp:Label ></ div >
     </ form >