How to attach a file to a mail , file take from local machine using fileupload control

 protected void Button1_Click(object sender, EventArgs e)<br />
    {<br />
        SmtpClient smtpClient = new SmtpClient("smtp.paramtel.com");<br />
        MailMessage message = new MailMessage();<br />
        try<br />
        {<br />
            <br />
            MailAddress fromAddress = new MailAddress(TextBox1.Text.Trim());<br />
            smtpClient.Host = "localhost";<br />
            smtpClient.Port = 25;<br />
            message.From = fromAddress;<br />
            message.To.Add("deepak@domainname.com");<br />
            message.Subject = "query";<br />
            message.CC.Add("admin2@yoursite.com");<br />
            string fileName = Path.GetFileName(FileUpload1.PostedFile.FileName);<br />
            Attachment myAttachment =<br />
                           new Attachment(FileUpload1.FileContent, fileName);<br />
            message.Attachments.Add(myAttachment);<br />
            message.IsBodyHtml = false;<br />
            message.Body = TextBox3.Text;<br />
            smtpClient.DeliveryMethod = SmtpDeliveryMethod.PickupDirectoryFromIis;<br />
            smtpClient.Send(message);<br />
            Label4.Text = "Email successfully sent.";<br />
        }<br />
        catch (Exception ex)<br />
        {<br />
            Label4.Text = "Send Email Failed.<br>" + ex.Message;<br />
        }<br />
<br />
        <br />
       <br />
    }<br />